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首页> 外文期刊>Journal of Stored Products Research >Characterization of new sources of mungbean (Vigna radiata (L.) Wilczek) resistance to bruchids, Callosobruchus spp. (Coleoptera: Bruchidae).
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Characterization of new sources of mungbean (Vigna radiata (L.) Wilczek) resistance to bruchids, Callosobruchus spp. (Coleoptera: Bruchidae).

机译：表征绿豆（Vigna radiata（L.）Wilczek）对布鲁氏菌，Callosobruchus spp的抗性的新来源。 （鞘翅目：Bruchidae）。

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摘要

The bruchid beetles Callosobruchus chinensis (L.) and C. maculatus (F.) are destructive pests of stored mungbean (Vigna radiata (L.) Wilczek). The development of resistant mungbean varieties to manage bruchids is a major breeding objective. In the present study, we investigated the characteristics of resistance to C. chinensis and C. maculatus in two new resistant mungbean accessions V1128 and V2817, and two previously reported resistant accessions V2709 and V2802, compared to the susceptible mungbean cultivar, KPS1. Evaluation for resistance to both bruchid species using whole and decorticated seeds revealed that V1128 and V2817 were free from damage, V2709 and V2802 showed partial damage with low or moderate number of bruchids emerging from seeds, and KPS1 showed complete damage with the highest number of bruchids emerged. Comparison of the seeds harvested at seed filling, early maturity and full maturity stages revealed that the percentage of damaged seeds from resistant accessions was lower at all stages compared with KPS1. V1128 and V2817 showed complete resistance against both bruchids regardless of when their seeds were harvested, while resistance in V2709 and V2802 were most pronounced at full maturity, and KPS1 was totally damaged at all times tested. These results suggest that the chemical factor(s) conferring resistance is synthesized as early as the seed filling stage. Evaluation of resistance using artificial seeds showed that increasing the percentage of resistant seed powder adversely affected bruchid growth and development. The number of adults emerging from seeds and number of damaged seeds decreased while adult developmental period increased as the proportion of resistant seed powder increased. The weight of emerging male and female adults of C. maculatus was lighter than those from the seeds containing susceptible seed powder alone. However, C. chinensis adults were not affected by the same test. The results suggest that biochemical(s) in cotyledon tissue are responsible for the resistance and the seed coat had no protective role against the bruchids. Although all four resistant accessions evaluated are useful for mungbean breeding, V1128 and V2817 show complete resistance to both C. chinensis and C. maculatus. Thus, these two new resistant sources may be the most effective for breeding purposes.
机译：布鲁氏甲虫Callosobruchus chinensis（L.）和C. maculatus（F.）是储存的绿豆（Vigna radiata（L.）Wilczek）的破坏性害虫。开发抗性绿豆品种来管理插花是一个主要的育种目标。在本研究中，与易感绿豆品种KPS1相比，我们调查了两个新的抗性绿豆种质V1128和V2817，以及两个先前报道的抗性绿豆种V2709和V2802对中华绒螯蟹和斑纹梭菌的抗性特征。使用完整种子和去皮种子对马鞭草属植物的抗性评估表明，V1128和V2817没有损坏，V2709和V2802显示了部分损害，种子中出现的马鞭草数量较少或中等，而KPS1显示出完整的损害，马鞭草数量最多出现了。比较种子灌浆，早熟和完全成熟阶段收获的种子，发现与KPS1相比，抗性种质受损种子的百分比在所有阶段均较低。 V1128和V2817不论种子何时收获，都表现出完全抗性，而V2709和V2802的抗性在完全成熟时最为明显，并且KPS1在所有测试时间都被完全破坏。这些结果表明，赋予抗性的化学因子早在种子填充阶段就被合成了。使用人工种子对抗性的评估表明，增加抗性种子粉的百分比会不利地影响肉chi的生长和发育。随着抗性种子粉末比例的增加，从种子中出来的成虫数量和受损种子数量减少，而成年发育期增加。比起只含有易感种子粉的种子，新兴的斑节对虾成年雄性和雌性的体重要轻。但是，中华梭状芽孢杆菌成虫不受相同测试的影响。结果表明，子叶组织中的生化成分是造成耐药性的原因，种皮对种皮没有保护作用。尽管评估的所有四个抗性种质都可用于绿豆育种，但V1128和V2817表现出对中华C和黄mac的完全抗性。因此，这两种新的抗性来源对于育种目的可能是最有效的。

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