Correlation and Path Analysis of Morphological Parameters Contributing to Yield in Rice (Oryza sativa) under Drought Stress.

Muhammad Asim Bhutta; SANA MUNIR; Muhammad Kamran Qureshi; Ahmad Naeem Shahzad; KASHIF ASLAM; HAMID MANZOOR; GHULAM SHABIR

doi:10.30848/PJB2019-1(28)

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Correlation and Path Analysis of Morphological Parameters Contributing to Yield in Rice (Oryza sativa) under Drought Stress.

Author(s)

Muhammad Asim Bhutta Department of Plant Breeding & Genetics, Faculty of Agricultural Sciences & Technology, Bahauddin Zakariya University, Multan,

SANA MUNIR Department of Plant Breeding & Genetics, Faculty of Agricultural Sciences & Technology, Bahauddin Zakariya University, Multan,

Muhammad Kamran Qureshi Department of Plant Breeding & Genetics, Faculty of Agricultural Sciences & Technology, Bahauddin Zakariya University, Multan,

Ahmad Naeem Shahzad Department of Agronomy, Faculty of Agricultural Sciences & Technology, Bahauddin Zakariya University, Multan,

KASHIF ASLAM Institute of Molecular Biology & Biotechnology, Bahauddin Zakariya University, Multan,

HAMID MANZOOR Institute of Molecular Biology & Biotechnology, Bahauddin Zakariya University, Multan,

GHULAM SHABIR Institute of Molecular Biology & Biotechnology, Bahauddin Zakariya University, Multan,

Abstract

Current experiment is conducted to study correlation and path analysis among morphological traits and their contribution towards yield under normal and drought stress using twenty diverse rice genotypes at Department of Plant Breeding and Genetics, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan. Genotypes were significantly varied (p<0.01-0.05) in yield and yield related traits. In addition, growth (Plant height, r2 = 0.17**) and yield attributes such as panicle length (0.49**), grains/ panicle (0.69**), grain weight/ panicle (0.99**), tillers/ plant (0.14) and 1000-grain weight (0.11*) were positively correlated in all genotypes under normal or drought stress conditions. Among genotypes, highest plant height was observed in Basmati-140 (43.13cm) comparatively to lowest was found in Sufaida 20 (26.27cm) under drought condition. Plant height was significantly reduced under drought stress than control condition in Munji 78B-1 from 64.71cm to 35.30cm, respectively. Drought drastically affected the yield/plant in different genotypes. Under drought stress, Harandi-379, Munji-78B-1 and Basmati-242 performed well for yield/plant with values of 7.54g, 7.69g and 9.28g, respectively. Grain weight/panicle showed highest positive ef fect (0.914 and 0.788) on yield/ plant and followed by spikelet fertility (0.022 and 0.056) under both drought and normal conditions, respectively. Results suggest that grain weight/panicle, 1000 seed weight and plant height can be used as selection indices for drought resistance.

Publication Details

Page(s) 73-80

DOI 10.30848/PJB2019-1(28)

Published Journal: Pakistan Journal of Botany, Volume: 51, Issue: 1, Year: 2019

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Keywords

yield, Path analysis, Oryza sativa, Morphological traits, : Correlation, Drought stress.

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