COMPLEMENTARITY OF GENES FOR HIGH GROAT-PROTEIN PERCENTAGE FROM AVENA-SATIVA L AND AVENA-STERILIS L
COMPLEMENTARITY OF GENES FOR HIGH GROAT-PROTEIN PERCENTAGE FROM AVENA-SATIVA L AND AVENA-STERILIS L
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DOI：
10.2135/cropsci1985.0011183x002500010027x
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发表时间：
1985-01-01
期刊：
影响因子：
2.3
通讯作者：
FREY, KJ
中科院分区：
文献类型：
--
作者：
COX, TS;FREY, KJ
以燕麦高粗蛋白率（PP）品系间10个杂交组合的70个F_2代品系为材料，分析其超亲分离和遗传变异，以确定栽培燕麦（A. sativa L.）野燕麦（A. sterilis L.）。6次群间交配涉及1个含有A. sativa和主要是A. sativa亲本，但含有来自A.不育四个（组内）交配2个父母之间的高PP基因来自同一物种。在5%的概率水平上，组间和组内交配的越界分离率分别为10.4%和4.3%。1%概率水平的相应发生率分别为6.9%和2.2%。大多数超亲分离来自3次群间交配。2个交配的平均PP，“Otee”×P1469111和“Dal”. PI 469111的值与高PP亲本PI 469111的值相等。两者也表现出最大的遗传方差估计。PP（10%选择强度）的预测选择响应范围为0.44至0.96个百分点，谷物产量的相关响应范围为-94（-3.7%）至-443 kg/ha（-17.5%）。然而，确实出现了具有高于平均水平的籽粒产量的高PP系。本研究表明，高PP基因更有可能在种间交配中相互补充。sativa和A.不育的基因比单独在任一物种中来自种内交配的相似基因要多。然而，一些组间交配产生了更大数量的超亲分离比别人。
Seventy F2-derived lines from each of 10 matings between oat strains having high groat-protein percentage (PP) were examined for transgressive segregation and genetic variation to determine the degree of complementarity between high-PP genes from the cultivated (A. sativa L.) and the wild oat (A. sterilis L.). Six (intergroup) matings involved 1 parent containing high-PP genes from A. sativa and one parent of chiefly A. sativa parentage, but containing high-PP genes from A. sterilis. Four (intragroup) matings were between 2 parents with high-PP genes from within the same species. Transgressive segregation at the 5% probabilty level occurred at rates of 10.4 and 4.3% in inter- and intragroup matings, respectively. Corresponding rates at the 1% probability level were 6.9 and 2.2%, resepctively. Most transgressive segregates resulted from 3 intergroup matings. Mean PP in 2 of the matings, ''Otee'' .times. P1469111 and ''Dal'' .times. PI469111, had values equal to that of PI469111, the high-PP parent. Both also exhibited the largest estimates of genetic variance. Predicted response to selection for PP (10% selection intensity) ranged from 0.44 to 0.96 percentage points, and correlated response of grain yield ranged from -94 (-3.7%) to -443 kg/ha (-17.5%). High-PP lines with above-average grain yield did occur, however. This study demonstrated that genes for high PP are more likely to complement each other in interspecific matings of A. sativa and A. sterilis than are similar genes from intraspecific matings in either species alone. However, some intergroup matings produced larger numbers of transgressive segregates than did others.