摘要
选用性状差异显著的3个西葫芦自交系配制两个杂交组合,对其产量、熟性和株型(株高、叶数、节间距)等农艺性状进行6个不同世代遗传效应分析。结果表明:杂种一代在产量性状方面表现出不同程度的杂种优势;单株结果数、坐果率和第一雌花节位符合加性一显性遗传模型,且第一雌花节位以负向超显性效应为主;株高、叶数、节间距、单果质量和始花期符合加性—显性—上位性遗传模型;控制株高遗传的主要是加性效应,控制始花期的主要是加性和加性×显性上位性效应,控制叶数的主要是加性和显性效应;单果质量的广义遗传力较低。
The genetic effects of yield traits, plant traits and maturity traits of summer squash were analyzed by using three inbred lines with significant difference. The results indicated that F1 had different heterosis on the main yield traits. Fruit number per plant, ratio of fruit setting and node of 1 st female flower accorded with the pattern of additive-dominance, while node of 1 st female flower had negative dominance effect primarily. Plant height, leaf number, internode length, individual fruit mass and early flowering season were coincident with the pattern of additive-dominance-epistasis. But the genetic effects of those traits had difference： Plant height had mostly additive effect;Early flowering season was mostly additive effect and additive dominance effect;Leaf number was mostly additive effect and dominance effect;The broad heritability of individual fruit mass was relatively low.
出处
《园艺学报》
CAS
CSCD
北大核心
2007年第5期1183-1188,共6页
Acta Horticulturae Sinica
基金
山东大学2006年科学技术发展计划项目(064034)
关键词
西葫芦
农艺性状
杂种优势
遗传效应
Summer squash
Agronomic trait
Heterosis
Genetic effect
