摘要
应用四粒荚比率高的长叶品种黑农３６与遗传背景不同的５个圆叶品系（种）配制５个组合。对亲本、Ｆ１代和Ｆ２代群体的每荚粒数进行了调查和统计分析，结果表明：长叶品种以三、四粒荚为主，平均荚粒数为２．９４。圆叶品系以三、二粒荚为主，平均荚粒数２．４０－２．６４。Ｆ１代，一粒荚数多表现略超高亲值。二粒荚数近于中亲值，三粒荚数略高于中亲值，四粒荚数略高于低亲值。每荚粒数表现为数量性状的遗传特点。Ｆ２代各种类型荚的变异有差异，一粒荚变异系数为９７％、二粒荚４０％、三粒荚３１．１％、四粒荚１２４．３％，三、四粒荚均有超亲遗传分离。Ｆ２代，四粒荚与一粒荚的分布高峰均在５％组。二粒荚的分布高峰在３０－３５％组，三粒荚的高峰在６０－６５％。各种粒数荚的广义遗传力（ｈＢ２），一粒荚为２４．４％、二粒荚３３．１％、三粒荚２６．３％、四粒荚５２．７％。其顺位四粒荚＞二粒荚＞三粒荚＞一粒荚。
Five crosses were made by using Heinong 36 with narrow leaflet and high rate of 4-seed pod per plant as common parent to cross with broad leaflet and low seed number per pod to study the inheritance of seed number per pod. The result indicated that the pod of narrow leaflet varieties were cooperated with 3-seed pod and 4-seed pod, while the pod of broad leaflet lines with 3-seed and 2-seed pod. The mean seed number per pod was 2.94 seeds and 2.4 to 2.64 seeds in the narrow and broad leaf varieties (lines), respectively. In F 1, 1-seed pod number was higher slightly than high-parent value, 2-seed pod ones were near mid-parent value (MPV), 3-seed pod ones were higher slightly than MPV, 4-seed pod ones were higher slightly than low-parent value. The characters of pods with various seed number behaved quantitative inheritance, the coefficient of variation of 1-seed pod, 2-seed pod, 3-seed pod and 4-seed pod was 97%,40%,30.1% and 124.3% in F 2 populations, respectively. In F 2 peak frequency distribution (PFD) of 1-seed pod and 4-seed pod was in 5% group. PFD of 2-seed pod was in 30-35% groups, PFD of 3-seed pod was in 60-65% groups. The broad-sense heritability was 24.4%, 33.1%, 26.3% and 52.7% for 1-seed, 2-seed, 3-seed and 4-seed pod, respectively.
出处
《大豆科学》
CAS
CSCD
北大核心
1998年第2期115-119,共5页
Soybean Science
关键词
英粒数
变异系数
次数分布
广义遗传力
大豆
Seed pod number
Coefficient of variation
Frequency distrbution
Broad-sense heritability
