Path analysis for agronomic traits and yield of salt tolerant rice cultivars under moderate salinity condition in Central Vietnam

Nguyen, Ha; Tran, Phuong Diem; Tran, Dang Hoa

doi:10.18805/ijare.a-431

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…In the hot season, the salinity effects on yield components were significant with relative reduction in the percentage of filled grain per panicle resulting in reduced grain yield (Table 2). Moreover, the traits of panicles per plant, panicle weight and dry biomass also had a positive correlation with yields of salt-tolerant rice cultivars under moderate salinity condition (Nguyen and Tran, 2020).…”

Section: Effect Of Potassium Levels On Yield Components To Grain Yiel...mentioning

confidence: 89%

Potassium Nutrition in Rice (Oryza sativa L.) for Higher Yield with Lower Sodium Uptake under Saline Conditions of Central Vietnam

Trinh,

Hoang,

et al. 2024

IJARe

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Background: Potassium (K) is an essential macronutrient, improves rice yield and contributes to salt stress tolerance. This study determined the best potassium (K) application level on yield formation and the saline resistance capability of rice under salinity field conditions of central Vietnam. Methods: Experiments were comprised of five K fertilizer application rates (0, 25, 50, 75 and 100 kg K2O/ha) and two rice varieties, viz, OM8104 and MNR3 for two growing seasons of 2021 and 2022. All treatments were arranged in a split-plot design with 3 replicates in Duy Vinh commune, Duy Xuyen district, Quang Nam province. Result: Potassium application affected the number of panicles per unit area, filled grain per panicle and actual grain yield of both rice varieties in both seasons under saline condition. Application of 50 kg K2O/ha reduced the soil salinity over the monitoring periods compared to the other K rates. EC values of soil were significantly higher during the hot season than the wet season showing high temperature effects. Application of 50 kg K2O/ha also accumulated maximum dry matter at different crop stages and produced the highest rice yield with 7.57 and 5.25 tons/ha for OM8104 and 7.35 and 5.18 tons/ha for MNR3 in both wet and hot seasons respectively. The harvest index could not affect significantly by K application irrespective of seasons and varieties. These increases in actual grain yields using 50 kg K2O/ha were attributed to increased filled grains per panicle, accumulation of high K+ content and K+/Na+ ratios in rice varieties in both seasons under saline field condition.

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Section: Effect Of Potassium Levels On Yield Components To Grain Yiel...mentioning

confidence: 89%

Potassium Nutrition in Rice (Oryza sativa L.) for Higher Yield with Lower Sodium Uptake under Saline Conditions of Central Vietnam

Trinh,

Hoang,

et al. 2024

IJARe

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“…The correlation per se does not give the complete picture of their interrelationships when more than two variables are involved (Fakorede and Opeke 1985). Path coefficient analysis measures the direct influence of one variable upon the other, and permits separation of correlation coefficients into components of direct and indirect effects which provides actual information on contribution of each character (Nguyen et al 2020) and thus forms the real basis of selection for the yield improvement. Keeping these aspects in view, the present investigation was planned to assess the genetic parameters of variability for pod yield and related horticultural traits in order to identify the most promising traits of interest.…”

Section: Genetic Variability For Podmentioning

confidence: 99%

Genetic Variability for Pod Yield and Component Traits in Sugar Snaps (Pisum sativum var. saccharatum)

Chauhan¹,

Sharma

et al. 2020

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Background: Edible podded pea is an oriental vegetable crop which shares the cultivation pattern with the garden pea. Fresh tender pods lacking parchment layer are consumed whole like beans. It is a newly introduced crop in India and therefore, it would be imperative to identify the most promising genotypes vis-à-vis traits of interest, those contributing towards maximization of yield. The present investigation was, therefore, planned to assess the genetic parameters of variability for pod yield and related horticultural traits in order to identify the most promising edible pod pea genotypesMethods: Thirty six genotypes comprising of 29 F7 advanced breeding lines and nine lines from different institutes including three checks namely, ‘Arka Apoorva’, ‘Arka Sampoorna’ and ‘Mithi Phali’ were evaluated in randomized complete block design over three replications during winters 2016-2017 at C.S.K. Himachal Pradesh Krishi Vishvavidyalaya, Palampur for pod yield and related horticultural traits.Result: Sufficient genetic variability was observed for all morphological and yield contributing attributes. The magnitude of phenotypic (PCV) and genotypic (GCV) coefficients of variation were high for pod yield while branches per plant, internodal length, harvest duration and pods per plant showed high PCV and moderate GCV. High heritability along with high genetic advance was observed for internodal length, plant height, average pod weight and pod yield per plant indicating the importance of additive gene action. Pod yield per plant revealed positive correlation at both phenotypic and genotypic levels with pods per plant, average pod weight, pod length and pod breadth. Pods per plant and average pod weight at both phenotypic and genotypic levels had maximum positive direct and indirect effects to the total association of component traits suggesting the importance of these traits towards pod yield.

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“…Soil salinity is one of the major stresses which severely limit plant growth and productivity (Koca et al, 2007 andNguyen et al, 2020). In India around 13.3 million hectares of land is affected by salinity.…”

Section: Introductionmentioning

confidence: 99%

Ameliorative Effects of Nitrogen Application on Vegetative Growth and Productivity in Genotypes of Ragi (Eleusine coracana Gaertn.) under Saline Conditions

Agarwal¹,

Kumar²

2021

IJARe

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Background: Salinity and low soil nitrogen availability are important growth limiting factors for most crops. The proper use of N fertilizer is not only important for growth but it may also alter the salinity tolerance of plants depending on the level of salinity. Methods: The present study was undertaken to determine the interactive effects of N nutrition and saline irrigations (3, 6, 7.2, 10, 12 and 14 dSm-1) on growth and grain productivity in two varieties of finger millet viz. VL-315 and Local Hills. Different growth and productivity parameters (like plant height, dry weight of shoot, root and leaves, dry weight of panicle/plant, no. of grains, grain yield/plant etc.) adversely affected by saline irrigations, however, nitrogen nutrition minimized at different levels of salinity. Result: The positive response of nitrogen was comparatively higher at lower salinity levels (3-7.2 dSm-1) as well as at control than higher salinity (10-14 dSm-1). The effect of salinity was lower in cv. VL- 315 than Local Hills, but the interactive effects of N nutrition and salinity also enhanced the dry weight of shoot, root, leaves, dry weight of panicles and grains/plant. It is probable that N nutrition had enhanced assimilation of NO3-1-N, through the activity of NRA which further increased total nitrogen and protein content in leaves, hence, enhanced growth, biological and grain yield in both cultivars.

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Path analysis for agronomic traits and yield of salt tolerant rice cultivars under moderate salinity condition in Central Vietnam

Cited by 4 publications

References 3 publications

Potassium Nutrition in Rice (Oryza sativa L.) for Higher Yield with Lower Sodium Uptake under Saline Conditions of Central Vietnam

Potassium Nutrition in Rice (Oryza sativa L.) for Higher Yield with Lower Sodium Uptake under Saline Conditions of Central Vietnam

Genetic Variability for Pod Yield and Component Traits in Sugar Snaps (Pisum sativum var. saccharatum)

Ameliorative Effects of Nitrogen Application on Vegetative Growth and Productivity in Genotypes of Ragi (Eleusine coracana Gaertn.) under Saline Conditions

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