K. Venkatesh, S. Jeyarani, M. Murugan, P. Kavitha, R. Venkatachalam, K. Suresh, K. Prakash
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引用次数: 0
摘要
印度塞勒姆木薯和蓖麻研究站对 375 个木薯基因型进行了粉虱抗性筛选，发现了 8 个高抗性基因型，即 Me 743、Me 650、Me 637、Me 739、Me 148、Me 874、Me 25 和 Me 707，这些基因型在关键生长阶段（种植后 3-6 个月）每株的虫量均少于 20 头。毛状体分析显示，普遍存在非腺体、简单、单细胞的拉长或不规则形状结构。粉虱发生率与毛状体密度之间的相关性研究表明两者呈正相关（0.39），但无统计学意义，这强调了毛状体在赋予抗性方面的作用。印度木薯的遗传多样性为培育抗性品种带来了巨大希望。
Decoding Antixenotic Mechanism of Resistance in Cassava Genotypes against Whitefly, Bemisia tabaci (Gennadius)
Screening 375 cassava genotypes at Tapioca and Castor Research Station, Salem, India against whitefly, Bemisia tabaci (Gennadius) revealed eight highly resistant genotypes namely, Me 743, Me 650, Me 637, Me 739, Me 148, Me 874, Me 25, and Me 707, maintaining fewer than 20 insects/plant across crucial growth stages (3-6 months after planting). Trichome analysis revealed prevalent non-glandular, simple, single-celled elongated or irregular-shaped structures. Correlation studies between whitefly incidence and trichome density indicated a positive relationship (0.39) without statistical significance, emphasizing the role of trichomes in conferring resistance. India’s cassava genetic diversity holds significant promise in the creation of resistant variety.
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