Identification of resistant donors from South Indian landraces for brown planthopper, Nilaparvata lugens (Stal.), Delphacidae, Hemiptera in rice

Author:

Prabu S1,Venugopal Sheela1,Suganthy M1,Suresh R1,Vellaikumar S1,Uma D1,Manonmani S1,Nelson S Jeyarajan1

Affiliation:

1. Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India

Abstract

A total of 126 rice landraces along with resistant (PTB 33) and susceptible (TN 1) check were screened using the protray method. Out of which 13 genotypes having a score of 3.0 - 7.0 were shortlisted and re-evaluated under the modified seed-box screening method. Results of the two experiments showed variation in resistance level with damage score of 3.0 to 9.0. Only one landrace Mysore Malli and PTB 33 were found to be resistant with damage score of 3.0 and four landraces viz., Chetty Samba, Panamara Samba, Vellai Gundu Samba and Vellai Kombi Samba were found to be moderately resistant in both the screening method. In protray screening, 8 landraces were found to be moderately susceptible, 66 landraces were found as susceptible and 48 landraces were highly susceptible. In modified seed-box screening, 5 landraces were found as moderately susceptible, 3 landraces were susceptible and TN 1 in both the methods was found as highly susceptible with a score of 9.0. Cluster analysis performed for 126 landraces based on damage score, nymphal settlement, chlorophyll and Nitrogen content grouped them into six clusters. Among the six clusters, resistant and moderately resistant landraces are grouped in cluster 4 which had low damage score and nymphal settlement and moderate chlorophyll and Nitrogen content.

Publisher

Association of Rice Research Workers

Subject

General Medicine

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3