摘要
以 6份黄瓜自交系为试材 ,采用完全双列杂交设计GriffingⅡ配制 15个组合 ,亲本自交留种。研究了弱光下黄瓜苗期茎粗、下胚轴长、比下胚轴长、叶面积、比叶面积、子叶面积、地上部鲜重、全株干重等 8个性状的遗传规律。只有下胚轴长和比下胚轴长这 2个性状的遗传符合加性 显性遗传。所测 8个性状的狭义遗传力均较低 ,其遗传以非加性效应为主。
Six cucumber inbred lines were used as tested materi als and between them 15 combinations were got through complete diallel cross Gri ffing Ⅱ to study the hereditary characters under low-light conditions such as the stem thickness, hypocotyl length specific hypocotyl length, true leaf area, specific leaf area, cotyledon area, fresh weight of aerial part and dry weight o f whole plant at seedling stage. The results showed that only hypocotyl length a nd specific hypocotyl length these two characters conformed to additive-dominan t inheritance, the narrow heritabilities of all the eight characters were quite low under low-light environment and their inheritance was mainly a non-additiv e effect.
出处
《上海农业学报》
CSCD
2004年第4期20-24,共5页
Acta Agriculturae Shanghai
基金
上海市科技兴农重点攻关项目"设施栽培黄瓜新品种选育"[编号 :沪农科攻字 (2 0 0 3 )第 2 1 1号 ]
国家 863项目"南方主要蔬菜新品种选育和选育技术研究"资助。
关键词
黄瓜
幼苗
性状
遗传
遗传力
子叶面积
自交系
Cucumber seedling
Low light
Diallel cross
Gene tic analysis
Heritability
Stem thickness
Hypocotyl length
Specific hypoc otyl length
Cotyledon area
True leaf area
Specific leaf area
Fresh weigh t of aerial part
Dry weight of whole pl
