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首页> 外文期刊>Range Management & Agroforestry >Variability in different cutting management environments in Alfalfa (Medicago sativa L.).
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Variability in different cutting management environments in Alfalfa (Medicago sativa L.).

机译：苜蓿（ Medicago sativa L.）在不同切割管理环境中的变异性。

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The variability, heritability and expected genetic gain of lucerne (Medicago sativa) were studied based on pooled observations under different cutting schedules. The study comprised 81 germplasm materials of lucerne including 55 collections from different parts of Rajasthan and Gujarat, 25 collections from existing germplasm material maintained at Indian Grassland and Fodder Research Institute, Jhansi, Uttar Pradesh, India and one standard check, RL88. Observations were recorded at the time of 50% flowering in the first cut and in subsequent cuts at one month interval for quantitative and quality traits, namely: plant height, primary basal branches, stem girth, number of nodes, internode length, plant spread, leaf weight, stem weight, leaf stem ratio, green forage and dry matter yields. Analysis of variance revealed that adjusted as well as unadjusted mean squares due to genotypes were largely significant for all traits on pooled main basis. Variances for number of nodes per plant, stem girth, plant spread were significant at few cutting environments. High genotypic coefficient of variation was observed for the various traits like green and dry fodder yield per plant, leaf and stem weight per plant, protein content, and leaf stem ratio per plant. Phenotypic coefficient of variation was slightly higher than their corresponding genotypic coefficient of variation. The high heritability coupled with high genetic advance was observed for green fodder yield and stem weight.
机译：基于不同采伐计划下的汇总观察，研究了苜蓿（ Medicago sativa ）的变异性，遗传力和预期遗传增益。这项研究包括81种卢塞恩种质材料，包括来自拉贾斯坦邦和古吉拉特邦不同地区的55种馆藏，来自印度草原和印度北方邦占西的印度草场和饲料研究所保存的现有种质材料25种，以及一种标准对照品RL88。在第一个切花期和随后的一个切花期50％开花时记录观察结果，以观察数量和质量特征，即：株高，初级基部分支，茎周长，节数，节间长度，植物传播，叶重，茎重，叶茎比，草料和干物质产量。方差分析显示，由于基因型而导致的已调整和未调整均方在所有主要性状上均具有重要意义。在少数切割环境下，单株结节数，茎周长，植株传播的差异很大。观察到各种性状的高基因型变异系数，例如每株植物的绿色和干饲料产量，每株植物的叶和茎重量，蛋白质含量和每株植物的叶茎比率。表型变异系数略高于其相应的基因型变异系数。观察到高遗传力和高遗传进展的绿色饲料产量和茎重。

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