摘要
1991~1994年在抗芜菁花叶病毒(TuMV)和霜霉病研究工作的基础上,利用杂种优势育种技术,以抗病矮脚黄雄性不育两用系为母本,以93R-37(自交系)为父本,选育出综合性状优良的矮抗四号三抗新品种。其特点:(1)丰产:夏季、秋季生产试验平均产量分别达42.2和63.4t/hm2,比对照矮杂一号和矮抗一号分别增产22.9%和25.1%;(2)抗病:TuMV、霜霉病、黑斑病人工鉴定病情指数分别为1.85(HR),15.48(R)和10.10(HR);(3)优质:Vc含量比对照提高5.2%,有机酸含量低于对照,叶片和叶柄可溶性固形物含量均高于对照矮抗一号;(4)耐热:热害指数低(9.75),比对照矮杂一号(42.50)降低了335%;叶片厚为0.55mm,是对照的1.49倍。
On the basis of the previous work on TuMV and downy mildewresistant breeding during 19911994, a new variety Dwarf Resistant No. 4 of Brassica campestris ssp. chinensis Makino was bred by means of crossbreeding with Aijiaohuang genetic male sterility as maternal and 93R37 (inbreed line) as paternal. The main characteristics of the new variety were as follows. (1)High yield: the average yields in summer and autumn were 42.2 t and 63.4 t per hectare respectively, 22.9% and 25.1% higher than the check cultivar Dwarf Hybrid No. 1 and Dwarf Resistant No. 1. (2) Disease resistance: values of disease index under artificial conditions for TuMV, downy mildew and alternaria leaf spot were 1.85(HR), 15.48(R), 10.10(HR) respectively. (3) Good quality: content of vitamine C was 5.2% higher than the check cultivar. Content of organic acid was lower than that of the check. Soluble solid substances in blade and petiole were higher than that of the check Dwarf Resistant No.1. (4) Heat tolerance: high temperature injury index was 9.75, 335% lower than that of the check. Thickness of leaf was 0.55 mm, 1.49 times as much as that of Dwarf Hybrid No.1
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1998年第2期24-29,共6页
Journal of Nanjing Agricultural University
基金
国家"八五"科技攻关项目
关键词
不结球白菜
育种
矮抗4号
抗病性
Brassica campestris ssp. chinensis Makino
breeding for disease resistence
Dwarf Resistant No.4