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引用次数: 0
摘要
摘要本研究的目的是比较30个鸽豆家族F3、F4、F5和F6代9个变量遗传力估算的不同方法。试验设计为随机完全区,3个重复,每个小区20株。通过方差分析(A N O V A) [h 2b-E(MS)]、限制性最大似然/最佳线性无偏预测(REML/BLUP) (h2b-REML)、亲代回归(h2PO)和标准差单位(h2UP)估计广义遗传力。h2b-E(MS)和h2b-REML的估计在七个分析变量中是相似的。为了更好的遗传控制和更容易的选择,我们分别对2个变量的4代、2个变量的3代、3个变量的2代和1个变量的1代进行h2b-E(MS)和h2b-REML >0.70的估计值。分别得到4个和5个变量的h2UP和h2PO >0.70的值。通过回归或亲代相关的估计显示一些值超出了0到1的预期范围。方差分析[h2b-E(MS)]和REML/BLUP [h2b-REML]方法是估计鸽豆遗传力的最佳方法。
Heritability estimated by different methods in four generations of progenies from a pigeon pea cross
Abstract The objective of this work was to compare different methods to estimate heritability in 30 pigeon pea families from the F3, F4, F5, and F6 generations, for nine variables. The experimental design was a randomized complete block with three replicates and 20 plants per plot. Broad-sense heritability was estimated by the analysis of variance ( A N O V A) [ h 2b-E(MS)], restricted maximum likelihood/best linear unbiased prediction (REML/BLUP) (h2b-REML), parent-offspring regression (h2PO), and standard deviation unit (h2UP). The h2b-E(MS) and h2b-REML estimates were similar for seven of the analyzed variables. For a higher genetic control and easier selection, values of h2b-E(MS) and h2b-REML >0.70 were estimated for two variables in four generations, two variables in three generations, three variables in two generations, and one variable in one generation. Values of h2UP and h2PO >0.70 were obtained for four and five variables, respectively. The estimates via regression or parent-offspring correlation showed some values outside the expected range of 0 to 1. The ANOVA [h2b-E(MS)] and REML/BLUP [h2b-REML] methods are the best to estimate pigeon pea heritability.
期刊介绍:
Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science.
Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.