CORRELATION OF AGRONOMIC TRAITS UNDER FAVORABLE IRRIGATION AND WATER STRESS CONDITIONS IN RICE (ORYZA SATIVA L.)

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SAFAEI CHAEIKAR S.; SAMIZADEH H.A.; RABIEI B.; ESFAHANI MASOUD

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Journal: Journal of Water and Soil Science Year:2009 | Volume:13 | Issue:48 Page(s): 91-105

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Title

CORRELATION OF AGRONOMIC TRAITS UNDER FAVORABLE IRRIGATION AND WATER STRESS CONDITIONS IN RICE (ORYZA SATIVA L.)

Author(s)

SAFAEI CHAEIKAR S. | SAMIZADEH H.A. | RABIEI B. | ESFAHANI MASOUD | Issue Writer Certificate

Keywords

RICEQ3

WATER STRESSQ2

GRAIN YIELDQ1

PATH ANALYSISQ3

FACTOR ANALYSISQ3

Abstract

In order to study the correlation of agronomic, morphologic and physiologic traits and their effects on GRAIN YIELD of RICE genotypes in two environments (favorable irrigation and WATER STRESS), 49 genotypes were evaluated using a completely randomized block design with 3 replications in two experimental conditions. All practices and conditions were the same for the two experiments with the exception of irrigation, where under stress conditions no irrigation was applied at tillering stage. Comparison of means showed significant differences between genotypes in each environment. Also, differences between yield and yield components of each genotype under two conditions were significant. The results of phenotypic correlations showed that the highest positive and significant correlation with GRAIN YIELD belonged to number of panicle per plant (0.95) in irrigation conditions and to number of filled grains per panicle (0.92) in WATER STRESS conditions. Stepwise regression analysis for GRAIN YIELD introduced number of panicle per plant, relative water content (RWC), flag leaf length and number of spikelet per panicle, respectively, as effective traits in GRAIN YIELD in irrigation conditions, however, in stress conditions, number of filled grain per panicle, number of panicle per plant and relative water content were effective traits in yield. The results of PATH ANALYSIS showed that the number of panicle per plant had the highest positive and direct effect on GRAIN YIELD in the two environments. FACTOR ANALYSIS introduced four factors in the two conditions named yield and crop production, phenologic, harvest index and plant shape and appearance quality of grains factors. Therefore, to select high yield and drought tolerant genotypes, we need to consider number of filled grain per panicle, number of panicle per plant and relative water content. In addition, traits such as panicle length, number of spikelet per panicle, flag leaf length and width that showed significant correlations with GRAIN YIELD in stress conditions should also be considered important and second to the above mentioned traits.

Cites

IDENTIFICATION OF QTLS LINKED TO PLANT HEIGHT AND MATURITY TIME IN RICE

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APA: Copy

SAFAEI CHAEIKAR, S., SAMIZADEH, H.A., RABIEI, B., & ESFAHANI, MASOUD. (2009). CORRELATION OF AGRONOMIC TRAITS UNDER FAVORABLE IRRIGATION AND WATER STRESS CONDITIONS IN RICE (ORYZA SATIVA L.). WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 13(48), 91-105. SID. https://sid.ir/paper/14705/en

Vancouver: Copy

SAFAEI CHAEIKAR S., SAMIZADEH H.A., RABIEI B., ESFAHANI MASOUD. CORRELATION OF AGRONOMIC TRAITS UNDER FAVORABLE IRRIGATION AND WATER STRESS CONDITIONS IN RICE (ORYZA SATIVA L.). WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2009;13(48):91-105. Available from: https://sid.ir/paper/14705/en

IEEE: Copy

S. SAFAEI CHAEIKAR, H.A. SAMIZADEH, B. RABIEI, and MASOUD ESFAHANI, “CORRELATION OF AGRONOMIC TRAITS UNDER FAVORABLE IRRIGATION AND WATER STRESS CONDITIONS IN RICE (ORYZA SATIVA L.),” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 13, no. 48, pp. 91–105, 2009, [Online]. Available: https://sid.ir/paper/14705/en

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