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Creation of New Parent Materials and Breeding of New Flowering Chinese Cabbage Variety—‘18A1’ |
ZHANG De-shuang,ZHANG Feng-lan,YU Yang-jun,ZHAO Xiu-yun,YU Shuan-cang,WANG Weihong,SU Tong-bing,LI Pei-rong,LU Gui-xiang |
Vegetable Research Center,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China |
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Abstract In order to broaden the breeding germplasm resources of flowering Chinese cabbage〔Brassica campestris L. ssp. chinensis(L.)var. utilis Tsen et Lee〕,and screen superior parent material,so as to select and breed male sterile coeno-species of flowering Chines cabbage,this experiment took 3 ways of hybridization,including inter subsubspecies between flowering Chinese cabbage with Brassica rapa,interspecies with Brassica juncea,and natural mutant selection to create and identify superior breeding materials for flowering Chinese cabbage;widely transferred the cytoplasmic male sterile lines of CMS96,and made up CMS96 cytoplasmic male sterile line group.Results showed that these 3 ways of hybridization were effective to create germplasm resources of flowering Chinese cabbage.Using inter subspecies hybridization,we gained CMS96 cytoplasmic male sterile lines,petal type turnip cytoplasm Ogu CMS,flowering Chinese cabbage with dark purple leaf blades,and with decumbency leaf blades;by interspecific hybridization,we gained flowering Chinese cabbage with round and serrated leaf,with bright green and light purple leaf blades.Through natural mutation selection,we achieved orange and milky white flowering Chinese cabbage and recessive nuclear male sterility line.At the same time,‘CMS96.nongjiacaixin 8’was crossed with‘Xinxilan 50 days’inbred line,and a new variety of‘18A1’was successfully bred.‘18A1’is a variety of mid-maturity with dark green leaves.Its stalk is oily green in color,crisp,tender with good taste.It is suitable to be planted in autumn and winter in Guangzhou,and the other southern regions.
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Received: 08 March 2020
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