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首页> 外文期刊>Spanish Journal of Agricultural Research >Short communication. Evaluation of castor (Ricinus communis L.) induced mutants for possible selection in the improvement of seed yield
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Short communication. Evaluation of castor (Ricinus communis L.) induced mutants for possible selection in the improvement of seed yield

机译：简短的沟通。评估蓖麻（Ricinus communis L.）诱导的突变体在提高种子产量中可能的选择

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The aim of the present work was to determine selection criteria suitable for developing castor ideotypes with high yield potentials. Nineteen M4 generation castor mutants were obtained by gamma irradiation (100 to 1000 Gy) of DS30 castor seeds, and evaluated alongside this reference variety over 2006-07 for their possible use in the improvement of castor seed yield. Days to ripening, plant height, number of spikes/plant, length of main spike, number of main spike capsules, capsule weight, 100-seed weight and seed yield per plant were recorded for each mutant. Correlation coefficients were calculated, path analyses performed, and the genetic features of the different traits were determined. A significant, positive correlation was seen between capsule weight and seed yield. The 100-seed weight showed a positive but non-significant phenotypic relationship plus a significant genotypic relationship with seed yield. Capsule weight also showed a strong direct effect on seed yield, plus a strong positive and significant genotypic correlation with this variable. More than 50% heritability was observed for all the traits studied except the 100-seed weight and capsule weight. The number of main spike capsules showed the greatest genetic advance, followed by spike length and number of spikes. Traits such as the number of capsules, spike length and number of spikes showed strong heritability and good genetic advance. These traits are therefore governed by additive genes, and for the improvement of seed yield selection may be based directly on these attributes. In conclusion, for the improvement of seed yield the main emphasis should be placed on the number of spikes and capsule weight, via the selection of the highest yielding mutants among those tested. However, spike length and 100-seed weight should also be taken into account.
机译：本工作的目的是确定适合于发展具有高产量潜力的蓖麻亚型的选择标准。通过对DS30蓖麻种子进行伽玛射线辐照（100至1000 Gy）获得19个M4世代蓖麻突变体，并在2006-07年与该参考品种一起评估了它们在提高蓖麻种子产量中的可能用途。记录每个突变体的成熟天数，植物高度，穗数/植物，主穗长度，主穗荚膜数量，荚膜重量，100粒重和每株种子的产量。计算相关系数，进行路径分析，并确定不同性状的遗传特征。胶囊重量与种子产量之间存在显着正相关。 100粒重显示出积极但不显着的表型关系，再加上与种子产量的显着基因型关系。胶囊重量还显示出对种子产量的强烈直接影响，以及与此变量之间强烈的正相关和显着的基因型相关性。对于所有研究的性状，除100粒重和胶囊重量外，均观察到超过50％的遗传力。主穗荚膜的数量显示出最大的遗传进展，其次是穗长度和穗数。荚膜数量，穗长和穗数等性状表现出较强的遗传力和良好的遗传进展。因此，这些性状由加性基因控制，为了提高种子产量，选择可直接基于这些特性。总之，为了提高种子产量，应通过在测试的品种中选择产量最高的突变体，将重​​点放在穗数和荚膜重量上。但是，也应考虑穗长和100粒重。

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