Pham Thi Dao and Hari Har Ram.Genetics of seed longevity in soybean[J].Soybean Science,1999,18(04):312-318.[doi:10.11861/j.issn.1000-9841.1999.04.0312]
大豆种子寿命的遗传
- Title:
- Genetics of seed longevity in soybean
- Keywords:
- Soybean; Seed lo ngevity; Storabili ty
- 文献标志码:
- A
- 摘要:
- 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, Kali tur 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Kali tur× 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。
- Abstract:
- Soybean seeds have a short sto rage life, especially in humid, t ropical envi ronments.How ever, few varieties hav e been identi fied to hav e superior seed long evity. This inv estig ationw as co nducted to study the genetics of seed longevity /storabili ty with the ultimate aimto improve this trait th rough breeding prog ramme.Parental, F1 , F2 , F3 g enerations of Kalitur× PK 416, Kalitur× PK 472 and PK 515×Ankur crosses w ere evaluated fo r seed lo ngevity af ter 8 months of ambient storage ( December-July) . Of the parental lines, Kali tur and Ankur w ere of superior seed longevi ty whilePK 416, PK 472 and PK515 w ere of poo r seed long evity. Seeds f rom F1 plants ( F2 seeds)show ed low storabili ty to be dominant ov er high sto rability. Seg reg atio n pat tern in F2 was 3∶ 1 in Kali tur× PK472 and 15∶ 1 in Kali tur× PK 416 and PK 515× Ankur ( low v s highlong ev ity ) suggesting that the trait w as g ov erned by 1 and 2major genes, respectiv ely. Thisratio w as supported by 5∶ 3 and 55∶ 9 ratio in the F3 ( bulk) of the respectiv e crosses. Thiscould also be confi rmed by observing the F3 rows of t rue breeding for recessiv e phenotype i.e. hig h seed long evity w hose number w as as per expectation in each cross.
参考文献/References:
[1 ] Green, D. E. and Pinnell, E. L. 1968 a. Inh eritance of soybean seed qualit y. I. Heri tabilit y of laborat ory germination and fi eld emergence. Grop Sci. 8: 5- 11
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