摘要
确定了评价不同生态型黄瓜品种低温发芽能力的适宜温度为13℃。相关分析表明低温发芽能力与苗期耐冷性呈显著正相关。利用8个低温发芽能力不同的品种配制完全双列杂交组合（P2＝64）进行低温（13℃）发芽试验。对其结果按Griffing方法Ⅰ进行配合力分析和遗传力估计，结果表明长春密刺、农大春刺、农大春光具有较高的一般配合力，CG×NCG组合特殊配合力较强，多数组合正反交效应差异不显著。遗传分析表明低温发芽能力的广义遗传力为87％，狭义遗传力为31％，说明低温发芽能力主要由非加性效应决定，宜从优势育种角度利用低温发芽能力这一性状进行耐冷性品种的选育。
the suitable temperature (13)to evaluate to evaluate low-temperature germination ability of different ecotype cucumber cultivars is determined.There's significant difference a mong eight cultivars for germination ability at 13 Low-temperature germination ability is positively.correlated with cold tolerance indexes of cucumber seedling.According to Griffing's method I,combining ability and heritability for low-temperature germination ability were analysed.The results reveals that general combining ability(G.C.A.)of Chunguang,Chunci and Mici cultivar is higher,special combining sbility (S.C. A.)of NCG(non-cold germinable lines)×CG(cold germinable lines)is greater and reciprocal effects are low.Meanwhile,it is determined that the broad sense heritability is 87% and the narrow sense heritability is 31% for low-temperature germination ability
出处
《中国农业大学学报》
CAS
CSCD
北大核心
1997年第5期109-114,共6页
Journal of China Agricultural University
关键词
黄瓜种子
低温发芽能力
配合力
遗传力分析
cucumber
low-temperature germination ability
combining ability
heritability
