Detected frequencies of pesticide residue in 1 382 vegetable samples were studied. The results showed that partial pesticide residue parameters in Chinese exported vegetables were selected by importing countries. The selectivity was focused on certain kinds of pesticides and vegetables, and even on certain months. As far as pesticide variety was concerned, the high detected frequency appeared in insecticides, especially in organophosphorus insecticides with high toxicity. The Legumes, Solanum and Brassica ...

Correlationship analysis were done among sensory analysis results,volatile compounds content,and sugar content with 8 cucumber varieties. The results showed that 2E,6Z-nonadienal has significant positive relationship to aroma, sweetness, comprehensive taste and total scores; trans-caryophyllene has significant relationship to sensory scores of aroma, sweetness and comprehensive taste; while 2E-nonenal has no relationship to sensory scores. Hexanal has significant negative relationship to many sensory items...

Under the NaCl stress, the photosynthetic rates of cucumber (Cucumis sativus L.) seedlings dramatically declined. Gs and WUE were also affected by NaCl stress. Pn,Gs and WUE of salt resistance varieties were higher than those of salt sensitive varieties.

The values of GCA, SCA of 5 main quality characters (protein content, total sugar content,length, fruit flesh thickness and fruit dry weight) in pickling cucumber were analyzed. The GCA of protein content, total sugar content, fruit flesh thickness and fruit dry weight of the line ZR22 were high,but that of length was low, which indicated the line ZR22 was a optimum parent for hybridization. All the SCA values of quality characters in combination of LN11×ZR22 were positive, which indicating that the combina...

New F 1 hybrid varieties and hybrid crossing lines bred with male sterile lines and inbred lines are introduced in this paper. These varieties and hybrid crossing lines, including Zhonggan 16, Zhonggan 18, Zhonggan 19, Zhonggan 20, are autumn cabbage type with different maturing time. Among them 4 new varieties have been examined and approving of Chinese Government and have been extended.

Huifeng No.1 is a new cabbage F 1 hybrid developed by crossing self-incompatible line 9004-3-2-5 with 9117-7. It is mid-early maturity. The head is flat round and compact with sweet and tender leaves. It is high resistant to virus disease, resistant to black rot, and is tolerant to bolting and heat. It is suitable for spring and autumn planting in most parts of China. It takes 80-85 days from planting to harvest in spring; averge head weight is 3-4 kg and mean yield is 106.0 t·hm -2. It takes 75-80 days...

Min Qie No.2 is a new eggplant F 1 hybrid developed by crossing inbred line 048-2-1-3 as female parent with inbred line 059-1-1-3 as male parent. It grows vigorously and has early maturity. Its fruit is 30-35 cm long and polish, purple red in color. The average fruit weight is about 140 g.The flesh is fine and feader. It has high resistance to Verticillium wilt and eggplant Phytophora fruit rot. The yield is 37.5 t·hm -2 .It is suitable to be cultivated under protected field in early spring and o...

Jingchun 99 is a new Chinese cabbage F_1 hybrid bred by crossing self-incompatible line 9191 with 9188. It is extra-early maturity, takes about 45-50 days from transplanting to harvest. It is tolerance to bolting and is resistant to virus, downy mildew and black rot, and has stronger resistance to soft rot than Qiangshi. Its head shape is ovate. Average head weight is about 2.1 kg. The yield in open field is about 82.5-90.0 t·hm~-2 . It has been extended to Beijing, Hebei, Henan, Shangdong, Inner Mongolia, ...

Jinqiu No.1 is a new Qingmaye type Chinese cabbage F_1 hybrid developed by crossing two self-sterile lines H216 and N209. It has similar resistance to virus, downy mildew and soft rot to Qiulu 75 and Zhongbai 76. The growth duration is about 78 days. The head is long tubular and tight. The average head weight is 3.4 kg. It yields about 114 t·hm~-2.