INHERITANCE OF SUBMERGENCE TOLERANCE IN RICE
INHERITANCE OF SUBMERGENCE TOLERANCE IN RICE
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DOI：
10.1007/bf00021591
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发表时间：
1989-05-01
期刊：
影响因子：
1.9
通讯作者：
DELACRUZ, QD
中科院分区：
文献类型：
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作者：
HAQUE, QA;LAMBERS, DHR;DELACRUZ, QD
在 8 次试验中研究了水稻 (Oryza sativa L.) 耐淹性的遗传。 8 双列交叉。使用在幼苗阶段完全淹没条件下双列种群(F1'+亲本)达到50%死亡率的持续时间来表征浸水耐受性，而不是通常的浸水存活百分比。人们发现父母在将性格遗传给后代方面具有很强的优势。加性和非加性基因效应非常显着。 对淹没高度耐受的亲本也具有高gca效应，并且发现两个耐受亲本之间的F1是双列基因组合中最耐受的。还观察到较高的狭义遗传力。发现加性优势模型对于这种双列杂交是有效的。耐淹没性部分显性超过易感性，隐性等位基因更集中在易感亲本 IR42 和 IR11288-B-B-69-1 中。
Inheritance of submergence tolerance in rice (Oryza sativa L.) was investigated in an 8 .times. 8 diallel cross. Duration to 50% mortality of the diallel populations (F1''s + parents) under completely submerged conditions at the seedlings stage was used to characterize submergence tolerance instead of the usual submergence survival percentages. A strong prepotency of parents was found in transmitting the character to their offspring. Additive and nonadditive gene effects were highly significant. Parents highly tolerant to submergence also had high gca effects, and F1''s between two tolerant parents were found to be the most tolerant of the diallel combinations. A high narrow-sense heritability was also observed. The additive-dominance model was found valid for this diallel cross. Submergence tolerance was partially dominant over susceptibility and recessive alleles were more concentrated in the susceptible parents IR42 and IR11288-B-B-69-1.