论文部分内容阅读
大豆种子的储存寿命较短,在潮湿、酷热的环境里更是如此。然而,已经筛选出几个种子寿命较长的品种。本研究旨在了解大豆种子寿命(或耐贮性)的遗传,以便通过育种程序来改良该性状。组合Kalitur×PK416、Kalitur×PK472 和PK515×Ankur的亲本、F1、F2 和F3 代的种子在自然条件下贮藏8 个月后进行寿命鉴定。在所用的几个亲本中,Kalitur和Ankur的耐贮性优于PK416、PK472 和PK515。从F1 植株上收获的种子(F2 种子)的鉴定结果表明不耐贮为显性。F2 代的分离模式在Kalitur×PK472 组合中为3∶1,在Kalitur×PK416 和PK515×Ankar组合中为15∶1(不耐贮∶耐贮),表明该性状分别由1 对和2 对主茎因控制。这个分离比率被相应组合的F3 代大群体的比率(5∶3 和55∶9)所证实也被育种实践所证实,因为在每个组合中,F3 代出现稳定的隐性(耐贮)表现型株行出现数量与每组合的理论值一致。
Soybean seeds have a shorter shelf life, especially in humid, hot environments. However, several varieties with longer seed life have been screened. The purpose of this study was to understand the inheritance of soybean seed life (or storability) in order to improve the trait through breeding programs. The parents of combinations Kalitur × PK416, Kalitur × PK472 and PK515 × Ankur, F1, F2 and F3 seeds were identified for life after storage for 8 months under natural conditions. Among the several parents used, Kalitur and Ankur had better storage stability than PK416, PK472 and PK515. The identification of seeds harvested from F1 plants (F2 seeds) showed that stool resistance was dominant. The F2 generation segregation pattern was 3: 1 in the Kalitur × PK472 combination and 15: 1 in Kalitur × PK416 and PK515 × Ankar combinations (tolerant storage: resistant to storage), indicating that the trait was comprised of 1 and 2 pairs, respectively Stem due to control. This segregation ratio was confirmed by the breeding practice as evidenced by the ratio of large population of F3 generations (5: 3 and 55: 9) of the respective combinations as the F3 generation showed a stable recessive (storable) performance in each combination The number of lines appeared consistent with the theoretical value of each combination.