Bacterial wilt diseases is an important pest harming the development of tomato industry．This paper reviewed the recent research progress in different bacterial wilt control measures，including agricultural，chemical，biological，and integrated one．The paper emphatically introduced the screening and application of microbiological agents for controlling tomato bacterial wilt in China，and also prospected the research tendency for controlling tomato bacterial wilt diseases．

Leaf angle is an important part of plant type，which affecting crop photosynthetic efficiency and yield．Taking ‘Heinz1706’with open and flat leaves as female parent and‘161-817’with upthrow leaves as male parent，this study constructed F_2：3 populations to conduct fine mapping of tomato leaf angle gene．Results of genetic analysis revealed that the leaf upthrow to open and flat leaf was shown partially dominant．The results of combining BSA method with QTL mapping indicated that there were 2 major QTL （LA1-1 and LA1-2）existed on chromosome of tomato No.10 and were connected with tomato leaf angle phenotype．Among them，LA1-1 was located between molecular markers A-10 and A-5 with 18.7% genetic contribution rate and 1.58 Mb physical distance．There were 210 genes encoded in this region．LA1-2 was located between molecular markers B-3 and B-9．The genetic contribution rates was 22.5% and physical distance was 378 kb．There were 32 genes encoded in this region．

Purple leaf mustard is a new type of healthy vegetable，rich in anthocyanins．Based on the purple-green leaf mustard near isogenic lines（NILs），this paper studied the microscopic distribution and content of anthocyanins in purple leaf mustard，and effect of anthocyanins on its photosynthesis．The results demonstrated that anthocyanins in purple leaf mustard were distributed in the upper and lower epidermis of mustard leaves．Under same light radiation intensity or same CO₂ concentration，the net photosynthetic rate of single plant of purple leaf was significantly lower than that of green leaf．The light compensation point，light saturation point and maximum carboxylation rate of single plant with purple leaf were extreme significantly lower than those with green leaf．The electron transport rate and maximum photosynthesis rate of the single plant with purple leaf was significantly lower than those with green leaf．The anthocyanin content in purple leaf mustard was significant or extremely significant negatively correlated to its photosynthesis characteristics as increasing anthocyanin content would reduce photosynthetic efficiency．

Taking 19 plants as experimental material，this paper studies the effects of different accompanying plants on controlling tomato root-knot nematode and promoting tomato growth．The results of preliminary and secondary screening indicated that 4 plants including rape，tillering onion，mint and fennel accompanying tomato could significantly reduce the number of tomato root-knot and its root-knot index．The relative control effect was 58.7%-82.8%．They had no remarkable inhibitory effect on tomato growth．Thus，they can be used as effective accompanying plants to reduce tomato root-knot nematode disease．

Taking Xinjiang wild onion and common welsh onion （Zhangqiu welsh onion and Japanese Yuanzang welsh onion）as test material，this paper studied the effects of drought stress on physiological indexes of 3 kind onions by potted water control method．The results showed that the overall growth of wild onion was weak，but with the decrease of the relative water content in soil，the changing range of morphological indicators，including plant height and leaf length of wild onion was small．The contents of soluble sugar, soluble protein，and proline in leaves and pseudostems of wild onion，root activity and antioxidant enzyme activity were all higher than those of common welsh onion．While，the increasing range of relative conductivity，MDA，H₂O₂ content were less than that of common welsh onion．And the increase range of soluble sugar，proline content，SOD，POD activity were greater than that of common welsh onion．The decreasing range of root activity was smaller than that of the common welsh onion．Based on various indicators，the drought resistance of wild onion is superior to that of Zhangqiu and Japanese Yuanzang welsh onion．

Under ebb-and-flow irrigation system，taking cucumber variety ‘Zhongnong No.18’ as material，this study carried out plug seedling culture in summer and winter，and compared the effects of different irrigation height（1 cm，2 cm and 3 cm）on water absorption rate of substrate，growth indexes of cucumber plug seedlings，root system vigor，and water and nitrogen use efficiency．The results showed that the water absorption rate of substrate accelerated gradually along with the irrigation height increasing．In summer and winter，when irrigation heights were 2 cm and 3 cm，the plug seedling height，leaf area，shoot fresh weight and dry mass were all higher than the 1 cm irrigation height，while the indexes of root volume，root system fresh weight and dry mass，root-shoot ratio and strong seedling index showed no significant differences among the 3 irrigation heights．However，the root system activity of plug seedlings at 3 cm irrigation height was significantly decreased，and the volume of feed and return liquid and application amount of fertilizer were the largest．In summer，the water and nitrogen use efficiency of plug seedlings was the highest under 2 cm irrigation height．Based on the growth indexes and water/fertilizer use efficiency of plug seedlings，in summer and winter，the suitable irrigation height was 2 cm for cucumber plug seedlings under ebb-and-flow irrigation．

Taking conventional fertilization as the contrast，through 2 successive years experiments under 30% total chemical fertilizer reduction，this paper compared the effects of 2 water and fertilizer integration models on yield and benefit of spring greenhouse pepper．The results showed that compared with the conventional acupoint application，both of these 2 water and fertilizer integration models had promoted the growth of spring greenhouse pepper and effectively improved its yield，efficiency and quality．In terms of comprehensive performance，the half-way water and fertilizer integration model was obviously better than fullscale water and fertilizer integration model．

Based on planting data of major strawberry producing areas in China from 2003-2016 and strawberry production survey data from April to May 2018，this paper analyzed the changes of strawberry planting in Jiangsu Province，and compared it with the other major production areas；then measured and calculated the concentration ratio and competitiveness of strawberry industry in Jiangsu Province．The results showed that both strawberry yield and planting acreage in Jiangsu Province increased unceasingly，and ranked the second in China in 2016．But，its per unit yield was only 65%-75% of the other main production provinces（Shandong，Liaoning，Hebei）．The low specialization degree and concentration coefficient were mainly caused by lower per unit yield．The obvious comprehensive comparative advantage was mainly due to the advantages in efficiency and scale．The main factors restricting the concentration ratio and competitiveness of strawberry industry in Jiangsu Province were too single variety；low standard production level，low proportion of virus-free seedlings，low scale of seedling breeding，serious continuous cropping obstacles，low degree of industrial organization，poor awareness for brand and inadequate propaganda．Hereby，this paper put forward some countermeasures to upgrade the concentration ratio and competitiveness of strawberry industry in Jiangsu Province．

Taking the main planting area of‘Majianghongsuan’，Xianchang Town Majiang County of Guizhou Province as a sample，this paper studied the plantation area，cultivation management mode，and yield of‘Majianghongsuan’by methods of interview，investigation and measure，etc．The paper also analyzed the reasons for cultivation area decreasing and yield declining．The results indicated that the total cultivation areas of‘Majianghongsuan’in Xianchang Town of Majiang County was 133.4 hm²，but the average planting area per household was smaller．About 35% of the households planted garlic less than 667 m²．The overall garlic yield was low with an average of 6.525 t · hm^-2，significantly lower than that of 12.600 t · hm^-2 in 2005．Besides，there were many problems existed，like not strict seed selection，too low plantation density，too late sowing，simplified fertilization，and extensive management，so countermeasures and suggestions were put forward as：selecting good garlic bulbs as seeds，grading seeds before sowing，rational planting density，and balanced fertilization，etc．

‘Shouyanmengyang’ is a new F₁ hybrid of sheep-horn pepper developed by crossing‘CSVHPM1407001’ as female parent and ‘CSVHPF1407002’ as male parent．The plant has strong growth vigor and successive fruit-setting ability．Its fruit is of long sheep-horn shape．The fruit is 25-30 cm in length，3-4 cm in shoulder width．Its immature fruit is yellow green in color，and the mature one is red in color．Its fruits has bright peel with，good commodity．It is tolerant to storage and transportation．The single fruit weight is about 100 g．It tastes hot and is suitable for fresh-eating．Its resistance to virus，anthrax and phytophthora in fields is stronger than that of the contrast‘ Xiyangyang’．The fresh pepper yield under protected cultivation can reach about 192.6 t · hm^-2．It is suitable for planting in protected fields in early spring and late autumn in Shandong，Hebei Provinces，etc．regions．

‘Lvyuan No. 7’ is a cucumber F₁ hybrid developed by crossing North China type female line‘72’as female parent and North China type inbred line‘R34’as male parent．The plant has strong growth vigor．The first female flower sets at the 4-6th node of the main vine，and later all nodes are female flowers．The commercial fruit is about 32 cm in length with short handle．Its peel is green and glossy with light wax powder，small tumor，small heart cavity．The fruit is prickly．Its flesh is light geen in color with good flavor and good quality．It is resistant to powdery mildew，and medium resistance to downy mildew．The average yield in greenhouse cultivation is 105 t · hm^-2．It is suitable for cultivation in Liaoning，Jiling，Shandong Province，etc. regions over wintering，in spring greenhouse and under plastic shelter．

‘Q-nuo No.5’is a high yielding and high quality waxy corn F₁ hybrid developed by crossing inbred line‘715-10’as female parent and‘8300-22’as male parent．The average plant height is 237.0 cm．Its ear height is 99.9 cm，and ear length is 19.5 cm．Its ear is of cone type，thick and large．There are 14-18 rows in one ear and the average kernels per row is 36.6．Its kernel is big in size and white in color．The kernels are in alignment with good commodity appearance．After cooking，it tastes sweet and delicious．The peel is thin without dregs．Amylopectin content takes up to 98.1% of the total starch content．It is medium resistant to banded sclerotial blight．It can yield about13.5 t · hm^-2 and the fresh kernel yield is about 8.7-9.6 t · hm^-2．It is suitable for planting in Sichuan Province，Chongqing and areas with similar ecological conditions．

‘Suzhen No.2’ is a F₁ hybrid of pumpkin type watermelon special rootstock，developed by crossing inbred line 15S-32 （Cucurbita maxcima） from India as female parent and 15S-27（Cucurbita maxcima）from India as male parent．This rootstock germinated in order and has light green and thick strong stalk．Its medullar cavity is solid．The cotyledons are open and flat，and of moderate size．It is easy to operate grafting．Its grafting has good compatibility，high survival rate，and high resistance to watermelon Fusarium wilt．In fields，its resistance to vine blight is stronger than that of the contrast‘ Jingxinzhen No.4’．In early stage，it is tolerant to cold and in late stage，its heat tolerance is prominent．The grafted seedlings will not get premature senility in late growth stage．It is easy to set fruit and has better yield increasing effect，averagely over 12.3%．It has less influence on fruit quality，but can increase the central sugar content in fruit．Its comprehensive properties are good．It is suitable for grafted cultivation in early spring in Jiangsu Province and similar areas．

Abstract：Soil salinization is one of the main abiotic stresses in vegetable production．Pumpkin
（Cucurbita spp.）displayed strong tolerance to salt stress and was used as rootstock in grafting cultivation of
cucumber，melon and watermelon．Selection of pumpkin varieties with salt tolerance is helpful to improve
the yield and economic benefits of pumpkin and Cucurbitaceae grafted vegetables．This paper summarized the
research progress on evaluation methods for salt tolerance of Cucurbita and salt-tolerant Cucurbita germplasm
screening，physiological mechanism in forming Cucurbita salt tolerance，inheritance of Cucurbita salt
tolerance traits and related salt tolerance genes in Cucurbita．Furthermore，the paper also prospected the future
research direction，hoping to provide more theoretical references for understanding the regulatory mechanism
of pumpkin salt tolerance，and selection of salt tolerant varieties．

Potato soil-borne diseases are becoming increasingly serious．Rapid detection on pathogenic
bacteria is an important basis for early diagnosis，predictive monitoring，and comprehensive control of the
diseases．This paper comprehensively compared the characteristics of conventional PCR，nested PCR，realtime
quantitative PCR，multiplex PCR and LAMP technology in sensitivity and specificity，and evaluated their
merits and demerits in detecting potato soil-borne diseases．The paper also summarized the primer information
of various diseases detection reports and advantages of this detection system．At the same time，the paper
prospected the applying future of each technology，aiming at obtaining an overall understanding about the rapid
detection methods and their development tendency on potato soil-borne diseases．

In order to find out the relation between ACC synthase and female chieh-qua，this study took
female inbred line（A36）and normal monoacious inbred line（SX）as material，gained CqACS gene through
coloning，then conducted homologous sequence comparative analysis with the known CqACS gene；and
constructed evolutionary tree．The expression profile of CqACS in seedling leaf blades of A36 was analyzed
after treatment with gibberellin（GA3）by qRT-PCR on CqACS gene．The female flower rate within 20 nodes
was carried out statistic analysis before and after gibberellin treatment．The results showed that the length of
CqACS gene in A36 of female inbred line was 1 318 bp and that in normal monoecism selfing line in SX was
1 637 bp．After comparative analysis，we found that SX in 3 bp base element：91，97 bp and 117 bp were
more than detected in A36，and only 2 basic group differences were found between them．The homologous
sequence comparison revealed that CqACS gene in A36 had the highest homology with Cit-ACS1 gene in
watermelon，reaching 95.31%．And the homology with cucumber Cs-ACS1 was 91.31%．CqACS gene in SX
had the homology with Cit-ACS1 gene in watermelon，reaching 78.04%，and the homology with cucumber
Cs-ACS1 was 76.06%．After GA3 treatment，the average female flower rate（within 20th node order）of GA3
treatment group in A36 was 45%．While，that of the contrast group was 90%．qRT-PCR analysis discovered
that the expression quantity of CqACS gene after GA3 treatment was significantly up-regulated．Compared with
the contrast group．Moreover，4 h after the third time treatment the up-regulated range was the largest．

In this experiment，19 pairs of InDel markers were used to study the genetic diversity of 46
germplasm resources of eggplant from home and abroad．The results showed that the PIC values of 19 pairs
of InDel markers ranged from 0.48-0.66，with 0.59 mean value．The genetic similarity coefficient of 46
eggplant germplasm resources was between 0.32-1.00 with 0.70 mean value，indicating little genetic difference
between 46 eggplant germplasm resources and with relatively narrow genetic basis．UPGMA method was
used for clustering analysis，and 46 germplasm resources of eggplant were divided into 4 groups at the genetic
similarity coefficient of 0.66．The clustering result had certain relevance with leaf color，corolla color and fruit
characters，while had little relevance with area of source．

 Taking multi-branch watermelon variety ‘Longkang No.9’ and no branch watermelon variety
‘Wuchazao’ as experimental materials，this paper studied and analyzed the changes of endogenous hormone
content，including Indole-2-carboxylic acid（ICA），indole-3-acetic acid（IAA），zeatin（Z），dihydrozeatin
（DHZ），abscisic acid（ABA），gibberellin（GA1，GA3，GA4 and GA7） by HPLC-MS/MS during
watermelon growth period．The results showed that the contents of ICA，ICA+IAA in watermelon leaves of no
branch variety were significantly higher than that of multi-branch variety during vine spreading period and fruitexpanding
early stage．During the whole growth period，the contents of Z，DHZ+Z in no branch variety were
lower than that of multi-branch variety．Furthermore，the ratios of （ICA+IAA）/（Z+DHZ），（ICA+IAA）/
ABA，（ICA+IAA）/（GA1+GA3+GA4+GA7） in no branch variety were significantly higher than that of multibranch
variety during vine spreading period and early stage of fruit expanding．Thus，it could be seen that
higher contents of ICA could inhibit the branching of watermelon side shoots；while the higher content of DHZ
and Z could promote the form of watermelon lateral branches．The higher ratios of（ ICA+IAA）/（Z+DHZ），
（ICA+IAA）/ABA，（ICA+IAA）/（GA1+GA3+GA4+GA7） were harmful to the formation of water melon
branches．

Taking 2 pepper nuclear male sterile lines‘GMSDS-702A’and‘GMSDS-702B’as
experimental material，this paper conducted investigation on their main agronomic traits，and measured the
contents of relevant physiological indicators at different development stages of flower buds．The results showed
that the vegetative growth of sterile line plant was relatively vigorous．The plant height and spread width were
significantly higher than that of the fertile line．The anthers of the sterile line were shriveled，with browned
surface，the tissue structure was hardened，and the anthers were tightly closed and could not form normal
pollen grains．The contents of soluble sugar，soluble protein，free proline，and malondialdehyde were all
different with various degrees at different development stages．At the stage of microspore mother cell，the
contents of soluble sugar and free proline in sterile lines were reduced by a big margin，and the content of
malondialdehyde was at a higher level．Those of，fertile lines were on the contrary．It might have a certain
inner link with the abortion of microspore．

Solanum khasianum C. B. Clarke is an affinis wild eggplant species，possessing valuable
genes resisting both biotic stress and abiotic stress．Taking 10 cultivated eggplants as female parent，
proceeding hybridization with Solanum khasianum C. B. Clarke，and adopting pollination methods as once
pollination，repeating pollination，style cutting back，mixture pollination and pollination after grafting，
etc．，this study had obtained the best way for interspecies hybridizatyon between Solanum melongena L. and
Solanum khasianum C. B. Clarke．The results showed that adopting pollination after grafting could increase
hybrid fruit setting rate，and obtain F₁ hybrid between L81 and Solanum khasianum C. B. Clarke．SSR
molecular identification was conducted on F1 plant at seedling stage and the F₁ seed was proven to be the seed of
interspecific hybridization between Solanum melongena L. and Solanum khasianum C. B. Clarke．

In recent years，a sclerotinia disease similar to symptoms of the other crops has broken out
at the main hyacinth bean producing area in Shanghai Pudong district．Through conducting mophological
observation，pathogenicity identification on separated and purified pathogenic bacteria，analyzing molecular
biology characteristics，we confirmed that the pathogen causing this disease was Sclerotinia sclerotiorum
（Lib．）de Bary．This pathogen could infect the whole plant of hyacinth bean，including its root，stem，
leaf，flower and pod．We had also observed the formation of its sclerotia．This study discovered that the
best growth carbon source for indoor seperation and culture of Sclerotinia sclerotiorum was fructose at 22 ℃，
pH 5．Proper growth conditions under stress were in favour of forming sclerotia．There were differences
existed in ITS rDNA sequences of Sclerotinia sclerotiorum from hyacinth bean，soybean and pakchoi．
Comparing Sclerotinia sclerotiorum originating from those different sources，we found that those strains
belonged to different fusion groups，and they had discrepant pathogenicities to different hosts，but all of them
could cause diseases．

Taking 8 kinds of main vegetable wastes in 11 prefecture-level cities of Hebei Province as study
object，the paper estimated the quantity of different vegetable wastes resources in Hebei Province by grassgrain
ratio．The results showed that the quantity of vegetable waste resources in Hebei Province increased at
an average rate of 42 600 t · a^-1 from 2011-2016，reaching 2.30 million t in 2016．Among which，cabbage
（578 700 t），Chinese cabbage（434 200 t） and solanaceous vegetables（299 800 t） had the highest quantity
of vegetable waste resources，increasing by 100.98%，50.80% and 4.12%，respectively compared with
the mean value，followed by tubers，beans and melon vegetables．Those of leaf and bulb vegetables were
the lowest．The quantity of waste resources was distributed unevenly among each prefecture-level city，
with 50.57%-82.52% coefficient variation．Tangshan（408 100 t），Shijiazhuang（351 700 t），Baoding
（297 800 t） and Zhangjiakou（279 600 t） had the maximum quantities，accounting for 58.04% of the whole
province．Utilization as resource manure of all these vegetable wastes in the province was equivalent to indirect
application of 45.15 kg · hm-2 pure nitrogen，27.75 kg · hm^-2 pure phosphorus，44.85 kg · hm^-2 pure potassium
and 1 089.15 kg · hm-2 of organic matter per 667 m2 farmland；and equivalent to 6.68% of the annual amount
of chemical fertilizer and 2.992 million t of organic fertilizer，among which cabbage，Chinese cabbage and
solanaceous vegetables had the highest nitrogen，phosphorus and potassium nutrients，accounting for 57.73%
of the 8 kinds vegetables．The organic matter content in tubers vegetables was the highest．The quantity of
vegetable waste resources in the whole province showed a steady upward trend from 2011-2016．There were
significant differences in the quantities of all kinds of vegetable wastes and nutrients in different regions，among
which vegetable yield and waste coefficient had become important factors affecting the difference of vegetable
waste resources quantities．

‘Ruizhi’is a new tapered pepper F1 hybrid developed by crossing thick cow-horn pepper stable
inbred line‘11-22’as female parent and pimento stable inbred line‘11-431’as male parent．It is of midmaturity．
The initial flower mostly sets on the 9th node．The plant has strong growth vigor．Its continuous
fruit setting ability is good．The fruit is in nice order．The upper fruits and down fruits have good consistency．
The fruit is about 17 cm in length，5 cm in shoulder width and 0.45 cm in pulp thickness with 2 or 3 lobes．
The single fruit weight is about 130 g．Its fruit has smooth surface with shining glossiness．The young fruit
is dark green in color．The matured one is dark red in color and changes color quickly with good hardness．
It tastes very hot．Its resistance to virus disease，bacterial wilt and stem rot in fields is stronger than that of the
contrast‘Tianza No.1’．At earlier stage，it can yield about 37.5 t · hm-2，and the total yield is about 63 t ·
hm-2．It is suitable for planting in protected and open fields in Yunnan and Sichuan Provinces．

‘Chujin No.1’is a new melon F₁ hybrid of medium and late maturity developed by crossing
inbred line‘TH607’as female parent and inbred line‘TH605’as male parent．Its whole growth period is
about 103 days，and the fruit development period is 42-45 days．The plant growth vigor is strong．Its branch
ability is medium．The leaf is green in color．The fruits mainly bear on lateral branches．The fruit is of round
shape and pericarp is yellow with dark green plaques．The average single fruit weight is about 1.5 kg．Its flesh
is white in color with about 3.7 cm thickness and soft quality．The content of center soluble solid is about 16%．
The fruit quality is fine with good taste．In fields，its resistance to powdery mildew and downy mildew was
amount to that of the contrast‘Yilishabai’．Its yield under plastic greenhouse by vine hanging cultivation was
about 37.5 t · hm^-2．It is suitable for facility cultivation in spring and autumn at the middle and lower reaches of
the Yangtze River．

Abstract：‘Longfan No.1’is a new tomato F1 hybrid developed by crossing inbred line‘TMX2511-2’as
female parent and‘TMX2535-4’as male parent．It is of indeterminate growth type．The plant has strong
growth vigor．The first female flower node order was at 8-9th node．The fruit is red in color and of oblate
shape with 6.5-7.0 cm vertical diameter，and 8.0-8.5 cm transverse diameter．The average single fruit weight
is about 220 g．The fruit is of medium firmness．Its young fruit has no green shoulder．The fruit soluble solid
content is 5.9%，lycopene content is 0.035 mg · g-1，VC content is 0.167 mg · g-1．It can generally yield about
127.5 t · hm-2．It is highly resistant to TYLCV，resistant to leaf mold，and moderate resistant to CMV and root
knot nematode．This variety is suitable for planting under plastic greenhouse in early spring and late autumn at
Lyuliang，Xinzhou，Jinzhong，Datong，Changzhi of Shanxi Province．

Abstract：‘Guichicangteng No.1’and‘Guichicangteng No.2’are excellent strains of new medicinal and
edible vegetable varieties screened from the wild resources in Guangxi and bred mainly by rapid propagation via
tissue culture，supplemented by cutting propagation．The tender shoots of‘Guichicangteng No.1’are green
in color，with a yield of 28.5 t · hm-2．The tender shoots of‘Guichicangteng No.2’are red in color．Its flavor
is more rich than that of‘Guichicangteng No.1’．‘Guichicangteng No.2’can yield 25.5 t · hm-2．These 2
varieties all have axillary tendril and slender branches，on which there are indistinct stripes．The leaves change
from papery to thick papery or subleathery and were 8-20 cm in length，4-15 cm in width．The fresh tender
buds are about 15 cm in length with special flavor．The contents of protein，fat，coarse fiber，calcium，
phosphorus，VC and total amino acid content are higher than that of normal vegetables．Three years after field
planting，these 2 varieties will enter into a high-yielding period．They are suitable for open fields cultivation in
Guangxi and Southwestern areas，and protected cultivation in northern regions．