Identification of Iron Deficiency-Induced Chlorosis Tolerant Lines from Wild Rice Germplasm

Author:

Kumar Rahul

Abstract

AbstractThe cultivation of transplanted rice has led to depletion of groundwater levels in many parts of the world. Direct-seeded rice under aerobic conditions is an alternative production technology that requires much less water. However, under aerobic conditions, iron in the soil is oxidized from ferric to ferrous, which is not easily available for rice, resulting in iron deficiency-induced chlorosis (IDIC) and a drastic reduction in seed yield. Cultivated rice genotypes have limited variations for IDIC tolerance, therefore, wildOryzagermplasm could be a better source for IDIC tolerance. In this study, 313Oryzaaccessions were evaluated for IDIC tolerance at the tillering stage under aerobic conditions using IDIC rating, SPAD value, and iron content in leaves. Based on these parameters, twenty IDIC tolerant lines were selected. These 20 lines exhibited no chlorosis, high SPAD values, and iron content, while 8 cultivated controls showed mild to high chlorosis symptoms and low SPAD and iron content. In a subsequent year, the selected lines were evaluated again to confirm their tolerance, and they exhibited similar levels of tolerance. These accessions may be useful for developing IDIC-tolerant cultivars for aerobic rice cultivation, and future study to understand the molecular mechanism of IDIC tolerance in rice.

Publisher

Cold Spring Harbor Laboratory

Reference32 articles.

1. Water-efficient management strategies in rice production;Int. Rice Res. Notes,2001

2. Brar, D. S. ; Khush, G. S. Alien introgression in rice. In Oryza: from Molecule to Plant; Khush, G. S. , Ed.; Springer: Dordrecht, 1997; pp 35–47.

3. Enrichment of cereal grains with zinc: Agronomic or genetic biofortification?

4. Effect of irrigation methods on rice yield and water use efficiency in China: a meta-analysis;Agric. Water Manage.,2021

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