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大豆硬粒(种皮不吸水)性状是一个能在不良环境中保持种子质量和活力的重要种子性状。本文研究了用育种品系D86—4448(硬粒)与商用大豆品种A6297(正常粒)杂交后的硬粒性状的遗传模式及与其它性状的关系。F_2及其亲本植株人工脱粒后在蒸馏水中(温度为24℃)吸水24和48小时。24小时后,422株F_2群体中,226株硬粒,165株中间型,31株正常粒的分离很接近9:6:1的比例,表明硬粒性状受两个主基因控制(x~2=1.67,P>0.40),基因间有累加效应,硬粒对正常粒为显性。生育期、百粒重、种皮颜色和光泽与硬粒性状没有关系,荚的吸水性与种子的吸水性正相关。
Soybean durum (the seed coat does not absorb water) is a trait of seed that maintains seed quality and vigor in adverse environments. In this paper, we studied the inheritance model of the hard-grain trait and the relationship with other traits after crossing with the commercial soybean variety A6297 (normal grain) with the breeding line D86-4448 (hard grain). F_2 and its parental plants were manually thresholded in distilled water (temperature 24 ° C) for 24 and 48 hours. After 24 hours, the segregation of 226 hards, 165 intermediate and 31 normals in 422 F2 populations was close to 9: 6: 1, indicating that the durum trait was controlled by two major genes (x ~ 2 = 1.67, P> 0.40), there is additive effect between genes, and the durum is dominant to normal granule. The growth period, the weight of 100 seeds, the color and luster of the seed coat had no relationship with the characteristics of the durum. The water absorption of the pods was positively correlated with the water absorption of the seeds.