期刊论文

中文

中国草地学报

1673-5021

2017

39

3

15-22

10.16742/j.zgcdxb.2017-03-03

湖南农业大学作物种质创新与利用重点实验室开放课题（15KFXM02） 湖南省教育厅一般项目（15C0667）

本校为第一机构

选芒属植物中表型性状存在显著差异的南荻(P1)与芒(P2)相互杂交,得到正、反交F_1代群体,并运用数量性状主+多基因混合遗传分析法对群体的分蘖数、腋芽数、干重、株高、基部外径、基部内径、中部外径、中部内径8性状进行了分析。结果表明:(1)在8个农艺性状中,各性状的正、反交变异范围大,均超过双亲本的变异范围。其中,基部内径、腋芽数和单株干重这3个性状变异系数最大。(2)分蘖数、腋芽数、株高、基部内径、中部外径、中部内径在正、反交后代存在显著性差异,推断可能存在母性遗传效应。(3)腋芽数的正、反交均受2对主基因+加性+显性控制,即B-2模型,主基因遗传率[h_(mg)~2(%)]正、反交分别为86.3...

The mixed major gene plus polygene inheritance model was used to analysis the inheritance law of 8 agronomic traits in Miscanthus in reciprocal crosses F1 generations derived from M. lutarioriparius （P1）×M. lutarioriparius （P2）. The results showed that ： 1）Range of variation for each trait in reciprocal progenies was far beyond that of their parents. The widest variation was in inner diameter of basic stem, axillary bud number and dry weight of plant. 2） Significant differences were observed between two reciprocal crosses in tiller numb...