Identification of resistance sources for sesame phyllody under epiphytotic conditions in India

IF 1.6 3区农林科学 Q2 AGRONOMY Genetic Resources and Crop Evolution Pub Date : 2024-07-26 DOI:10.1007/s10722-024-02087-z

M. Santha Lakshmi Prasad, M. Surya Prakash Reddy, P. Duraimurugan, K. Prasindhu, J. Jawaharlal, K.T. Ramya, H.H. Kumaraswamy, M. Sujatha, K. Alivelu, K. Sakthivel, T. Boopathi

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Abstract

Sesame crop is susceptible to phyllody disease caused by phytoplasma leading to major yield losses across India and worldwide. Screening of sesame genotypes against phyllody is essential to identify reliable sources of resistance. The experiments were conducted in phyllody hot spot research field with different dates of sowing in 2018–2019 to identify the effective season for screening against sesame phyllody and durable source of resistance. The results from our study recorded that phyllody incidence was more prevalent during July sowings when compared to November, August and January. Furthermore, field screening for continuous three years (2019–2021) recorded phyllody tolerance in three sesame genotypes (GTG-30, G-10-P1-P5-P3 and G-10-P1-P5-P6) along with resistant check GT-10. Sesame genotype, RJR-170 was found to be highly susceptible among all genotypes. The leafhopper population ranged from 0.2 to 0.3 among genotypes showing tolerance. Our findings could be successfully exploited in phyllody resistant breeding programmes.

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鉴定印度附生条件下芝麻植病的抗性来源

芝麻作物易受由植物支原体引起的疫病侵染，导致印度和全世界的产量遭受重大损失。筛选芝麻抗植病基因型对于确定可靠的抗性来源至关重要。2018-2019 年，我们在疫霉病热点研究田进行了不同播种日期的试验，以确定筛选芝麻疫霉病的有效季节和持久的抗性来源。研究结果表明，与 11 月、8 月和 1 月相比，7 月播种期的芝麻植病发生率更高。此外，在连续三年（2019-2021年）的田间筛选中，三个芝麻基因型（GTG-30、G-10-P1-P5-P3和G-10-P1-P5-P6）以及抗性对照GT-10均表现出对植病的耐受性。在所有基因型中，芝麻基因型 RJR-170 非常易感。在表现出抗性的基因型中，叶蝉的数量在 0.2 到 0.3 之间。我们的研究结果可成功用于抗叶蝉育种计划。

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来源期刊

Genetic Resources and Crop Evolution 农林科学-农艺学

CiteScore

4.10

自引率

10.00%

发文量

178

审稿时长

3 months

期刊介绍： Genetic Resources and Crop Evolution is devoted to all aspects of plant genetic resources research. It publishes original articles in the fields of taxonomical, morphological, physiological, biochemical, genetical, cytological or ethnobotanical research of genetic resources and includes contributions to gene-bank management in a broad sense, that means to collecting, maintenance, evaluation, storage and documentation. Areas of particular interest include: -crop evolution -domestication -crop-weed relationships -related wild species -history of cultivated plants including palaeoethnobotany. Genetic Resources and Crop Evolution also publishes short communications, e.g. newly described crop taxa, nomenclatural notes, reports of collecting missions, evaluation results of gene-bank material etc. as well as book reviews of important publications in the field of genetic resources. Every volume will contain some review articles on actual problems. The journal is the internationalized continuation of the German periodical Die Kulturpflanze, published formerly by the Institute of Plant Genetics and Crop Plant Research at Gatersleben, Germany. All contributions are in the English language and are subject to peer reviewing.