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首页> 外文期刊>Critical Reviews in Plant Sciences >Quantitative Trait Loci for Leaf Angle, Leaf Width, Leaf Length, and Plant Height in a maize (Zea mays L) B73 x Mo17 population
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Quantitative Trait Loci for Leaf Angle, Leaf Width, Leaf Length, and Plant Height in a maize (Zea mays L) B73 x Mo17 population

机译：叶角，叶宽，叶长度和玉米植物高度的定量特质基因座（Zea Mays L）B73 x Mo17人口

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摘要

Morphological traits affecting the canopy architecture of maize (Zea mays L) in high density cultivation can affect productivity. To identify quantitative trait loci affecting some of these traits, including leaf angle, leaf width, leaf length, and plant height, I analyzed these traits in the intermated B73 x Mo17 recombinant inbred line population, IBM-94, a maize population that other researchers developed for genetic studies by the scientific community. I collected data for the traits in replicated trials of IBM-94 grown in 2007, 2008, and 2009 at Sioux Falls, SD, USA. Means standard errors were for leaf angle = 26 +/- 2.6 degrees, leaf width = 91.0 +/- 2.95 mm, leaf length 764.6 +/- 20.76 mm, plant height = 2231.3 +/- 101.24 mm. There was significant (alpha = 0.01) genotypic variation for each trait. Heritability for height = 74.5%, leaf width = 86.2%, leaf length = 85.3%, and leaf angle = 90.5%. Phenotype data were combined with genetic maps and molecular marker haplotypes from the Maize Genetics and Genomics Database to analyze for quantitative trait loci by composite interval mapping using PLABMQTL computer software. One to three quantitative trait loci with logarithm of odds equivalent to alpha = 0.05 were identified for each trait. Three quantitative trait loci were identified for leaf angle on chromosomes 1, 5, and 9, two for leaf width on chromosomes 2 and 8, one for leaf length on chromosome 2, and one for plant height on chromosome 4. Regression models explained 27.1% of leaf angle, 25.0% of leaf width, 9.1% of leaf length, and 8.4% of plant height variation.
机译：影响高密度培养中玉米结构架构（Zea Mays L）的形态学性状会影响生产率。为了鉴定影响这些特征中一些的定量性状基因座，包括叶角，叶宽，叶子长度和植物高度，我分析了所谓的B73 X Mo17重组近交系数，IBM-94的这些性状，是其他研究人员的玉米人口开发了科学界的遗传研究。我在2007年，2009年和2009年在美国SDX Falls的2007年增长的IBM-94复制试验中收集了TRAIT的数据。意味着标准误差为叶角= 26 +/- 2.6度，叶宽= 91.0 +/- 2.95 mm，叶长764.6 +/- 20.76 mm，植物高度= 2231.3 +/- 101.24 mm。每个特征有很大的（α= 0.01）基因型变异。遗传性高度= 74.5％，叶宽= 86.2％，叶长度= 85.3％，叶角= 90.5％。从玉米遗传学和基因组学数据库中与遗传映射和分子标记单倍型与遗传映射和分子标记物数据库组合，以通过使用PLABMQTL计算机软件通过复合间隔映射来分析定量特征基因座。对于每个特征，确定了具有相当于α= 0.05的赔率对数的一到三个定量性状基因座。染色体1,5和9，2的叶角鉴定出三个定量性状基因座，用于染色体2和8上的叶片宽度，用于染色体2的叶片长度，染色体植物高度4.回归模型解释了27.1％叶角，叶片宽度的25.0％，叶片长度为9.1％，植物高度变化的8.4％。

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