Skip to content
Research Article Open access CC BY 4.0

Genetic Variability for Root and Shoot Morpho-physiological Traits Contributing to Seedling Drought Stress Tolerance in Parental Lines of Pearl Millet

A. Govardhani, SNCVL Pushpavalli, S. Vanisri, T. Nepolean, A. Geetha

Journal of Advances in Biology & Biotechnology · pp. 24–35 · Published 4 May 2024

10.9734/jabb/2024/v27i6862

Abstract

Drought stress severely affects plant growth and development leading to substantial reduction in yield and biomass accumulation. Forty one Pearl millet parental lines were subjected to seedling drought stress and morpho–physiological attributes along with individual drought stress response indices were recorded. Significant genetic variability existed for all the traits and genotype ICMX 1410698-SB-11-1-1-2(B) ranked first based on combined drought stress response index. Principal component analysis indicated that first two PCs explained 86.4% of variation under drought conditions. GCV ranged from 13.84 to 23.47% under drought indicating genetic basis for variability. D2 statistics grouped the genotypes into seven clusters. The maximum inter-cluster distance was reported between the clusters III and VII while clusters III & I ranked second under drought stress. These are potential drought tolerant parental lines for hybrid breeding. Root/Shoot ratio has been the major contributor for genetic divergence under both control and drought stress.

Pearl millet seedling drought Stress genetic variability relative water content water retention capacity

References (11)

  1. 1 Plant drought stress: effects, mechanisms and management [DOI]
  2. 2 Drought Stress in Plants: Causes, Consequences, and Tolerance [DOI]
  3. 3 Genetic dissection of maize drought tolerance for trait improvement [DOI]
  4. 4 Genomic Tools in Pearl Millet Breeding for Drought Tolerance: Status and Prospects [DOI]
  5. 5 Assessment of pearl millet genotypes for drought stress tolerance at early and late seedling stages [DOI]
  6. 6 The impact of limited soil moisture and waterlogging stress conditions on morphological and anatomical root traits in maize (Zea mays L.) hybrids of different drought tolerance [DOI]
  7. 7 Simple, Rapid And Cost Effective Screening Method For Drought Resistant Breeding In Pearl Millet
  8. 8 Wheat seedlings growth response to water deficiency and how it correlates with adult plant tolerance to drought [DOI]
  9. 9 Genetic Variability Assessment of Tropical Indica Rice (Oryza sativa L.) Seedlings for Drought Stress Tolerance [DOI]
  10. 10 Analysis of genetic variability and character relationship in rice (Oryza sativa L.) seed and seedling traits [DOI]
  11. 11 Genetic divergence, correlation and path coefficient analysis for the yield components of pigeonpea genotypes [DOI]

Cited by 2

Exploring the relationship between environmental origin, phylogenetic relatedness and root system architecture (RSA) in wild lentil species.

Salma Rouichi, Romain Fernandez, Alain Audebert · Functional Plant Biology · 2025

Showing 1 of 2 known citations — external sources report more than can currently be individually listed.

Related research

Article metrics

Real usage data collected on this platform.

12

Page views

0

PDF downloads

0

Outbound clicks

2

Citations

Views over time

Views by country

Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".

Traffic sources

Referring site, by host.

Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.