Differential response of groundnut genotypes for iron (Fe) deficiency chlorosis tolerance and productivity traits under Fe-supplemented and Fe-non-supplemented conditions

IF 1 4区生物学 Q3 PLANT SCIENCES

Indian Journal of Genetics and Plant Breeding Pub Date : 2021-03-25 DOI:10.31742/ijgpb.81.1.8

G. K. Naidu, S. K. Pattanashetti, Omesh Kumar, O. Sridevi, Basanagouda C Patil

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引用次数: 0

Abstract

Groundnut is sensitive to Fe deficiency under alkaline and calcareous soils and exhibits iron deficiency chlorosis (IDC) causing significant reduction in growth and yield. Genotypes were assessed for IDC related traits such as visual chlorosis rating, SPAD chlorophyll meter reading, chlorophyll and active iron (Fe2+) content across five growth stages and also for productivity traits viz., plant height, number of primary branches, number of pods per plant, pod yield, shelling per cent, 100 seed weight and haulm yield. Comparison between Fe-supplemented and Fe-nonsupplemented condition for IDC related traits showed not much difference among IDC tolerant genotypes across all five growth stages, while significant differences among IDC susceptible genotypes were observed. Maximum reduction in pod yield was observed among IDC susceptible genotypes compared to IDC tolerant and moderately tolerant genotypes. However, recently released variety G 2- 52 with moderate tolerance to IDC and higher yield potential recorded higher pod yield both under Fe applied (1754 kgha–1) and non-applied conditions (1544 kgha–1).

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补铁和不补铁条件下花生基因型对缺铁性黄化耐性和生产力性状的差异响应

花生在碱性和石灰性土壤中对缺铁敏感，表现出缺铁性黄化（IDC），导致生长和产量显著下降。对IDC相关性状的基因型进行了评估，如视觉失绿评级、SPAD叶绿素仪读数、五个生长阶段的叶绿素和活性铁（Fe2+）含量，以及生产力性状，即株高、主枝数量、单株荚数、荚产量、去壳率、百粒重和茎产量。IDC相关性状的补铁和不补铁条件的比较表明，在所有五个生长阶段，耐IDC基因型之间没有太大差异，而易感IDC的基因型之间则存在显著差异。与IDC耐受和中度耐受基因型相比，IDC易感基因型的荚产量下降幅度最大。然而，最近发布的对IDC具有中等耐受性和较高产量潜力的品种G2-52在施用Fe（1754 kgha–1）和未施用Fe（1544 kgha-1）的条件下都记录了较高的荚产量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Indian Journal of Genetics and Plant Breeding PLANT SCIENCES-

CiteScore

1.80

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Advance the cause of genetics and plant breeding and to encourage and promote study and research in these disciplines in the service of agriculture; to disseminate the knowledge of genetics and plant breeding; provide facilities for association and conference among students of genetics and plant breeding and for encouragement of close relationship between them and those in the related sciences; advocate policies in the interest of the nation in the field of genetics and plant breeding, and facilitate international cooperation in the field of genetics and plant breeding.