scholarly journals Study of Correlation and Path Coefficient Analysis of Agronomic Traits and Grain Yield for Aegilops cylindrica Accessions under Non-stress and Drought Stress Conditions in Ilam

2017 ◽  
Vol 9 (23) ◽  
pp. 76-84
Author(s):  
Afsaneh Noori ◽  
Ali ashraf Mehrabi ◽  
Hoshmand Safari ◽  
◽  
◽  
...  
Keyword(s):  
Drought Stress ◽  
Grain Yield ◽  
Agronomic Traits ◽  
Stress Conditions ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Aegilops Cylindrica

Heritability and genetic gain for grain yield and path coefficient analysis of some agronomic traits in early-maturing maize hybrids

Euphytica ◽  
2015 ◽  
Vol 206 (1) ◽  
pp. 225-244 ◽  
Author(s):  
Siphesihle G. Maphumulo ◽  
John Derera ◽  
Fikile Qwabe ◽  
Pedro Fato ◽  
Edmore Gasura ◽  
...  
Keyword(s):  
Grain Yield ◽  
Genetic Gain ◽  
Agronomic Traits ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Maize Hybrids ◽  
Early Maturing

scholarly journals Evaluation of some Agronomic Traits and their Association with Grain Yield in Mutant Rice Lines under Normal and Post-anthesis Drought Stress Conditions

2018 ◽  
Vol 10 (27) ◽  
pp. 180-195
Author(s):  
Peyman Sharifi ◽  
Ali Akbar Ebadi ◽  
Hashem Aminpanah ◽  
◽  
◽  
...  
Keyword(s):  
Drought Stress ◽  
Grain Yield ◽  
Agronomic Traits ◽  
Stress Conditions

scholarly journals Photosynthetic efficiency parameters as indicators of agronomic traits of winter wheat cultivars in different soil water conditions

Genetika ◽  
2017 ◽  
Vol 49 (3) ◽  
pp. 891-910 ◽  
Author(s):  
Josip Kovacevic ◽  
Maja Mazur ◽  
Georg Drezner ◽  
Alojzije Lalic ◽  
Aleksandra Sudaric ◽  
...  
Keyword(s):  
Drought Stress ◽  
Grain Yield ◽  
Water Use ◽  
Cross Section ◽  
Photosynthetic Efficiency ◽  
Agronomic Traits ◽  
Stress Conditions ◽  
Wheat Cultivars ◽  
Dissipation Energy ◽  
Use Efficiency

In an effort to find breeding methods for improving drought stress tolerance and grain yield, twelve photosynthetic efficiency parameters have been measured on ten cultivars of winter wheat (Triticum aestivum L.), along with water use (WU), water use efficiency (WUE) and agronomic traits of grain yield (GYP), biomass weight (BWP), harvest index (HI), yield stability index (YSI) and stress tolerance index (STI) in the vegetative pot trial with control (B1) and drought stress (B2) treatments. Drought stress induced in three different stages of development has caused decrease in water use efficiency based on biomass (WUEb) (B1: 2.94 g L-1; B2: 2.71 g L-1) and grain yield (WUEg) (B1: 1.03 g L-1; B2: 0.89 g L-1), as well as GYP and BWP. Dissipation energy flux per excited cross section (DI0/CS0) observed in the drought stress treatment in the tillering stage of growth gave significant negative correlation coefficient (P?0.05) with agronomic traits of tested wheat cultivars (GYP:-0.75; WUEg and STI: -0.74; YSI: -0.67). Performance index (PIABS) measured in the drought stress conditions in the flag leaf stage was in significant positive correlation with GYP and WUEg (r=0.64). Lower values of absorption flux per excited cross section (ABS/CS0), electron transport per excited CS (ET0/CS0) and dissipation energy flux per excited CS (DI0/CS0) and higher values of PIABS, measured on wheat genotypes (cultivars) in the drought stress conditions of pot trial, could indicate higher tolerance to drought stress conditions. Results of the studied photosynthetic efficiency parameters of wheat cultivars were also the good predictor for important agronomic traits, especially, when they were detected in the early stage of growth.

scholarly journals Copper Nanoparticle Application Enhances Plant Growth and Grain Yield in Maize Under Drought Stress Conditions

2021 ◽  
Author(s):  
Dong Van Nguyen ◽  
Huong Mai Nguyen ◽  
Nga Thanh Le ◽  
Kien Huu Nguyen ◽  
Hoa Thi Nguyen ◽  
...  
Keyword(s):  
Drought Stress ◽  
Plant Growth ◽  
Grain Yield ◽  
Stress Conditions ◽  
Copper Nanoparticle

scholarly journals Evaluation of Underutilized Kodo Millet (Paspalum scrobiculatum L.) Accessions using Morphological and Quality Traits

2020 ◽  
Author(s):  
V. Nirubana ◽  
R. Ravikesavan ◽  
K. Ganesamurthy
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Association Studies ◽  
Antioxidant Properties ◽  
Flowering Plant ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Wide Range ◽  
Kodo Millet ◽  
Inflorescence Length

Background: Kodo millet is an important drought tolerant crop and has high nutritional values, dietary fiber and antioxidant properties. It has considerable production potential in marginal and low fertility soils under diverse environmental conditions. Considering the importance of the crop, it is necessary to improve the nutritional quality along with grain yield of the crop. With this background, the investigation was aimed to study the correlation and path coefficient analysis which helps to identify the promising traits for yield and quality improvement. Methods: One hundred and three kodo millet germplasm lines were evaluated for 13 morpho-agronomic and two grain nutritional traits. The crop was raised in randomized block design to select the promising genotypes and to study the association among the traits and the magnitude of direct and indirect effects for fifteen quantitative traits. Result: Based on the overall mean performance the significant genotypes were identified and found wide range of variability for different traits. Character association studies indicated that days to first flowering, days to 50 per cent flowering, plant height, number of productive tillers, peduncle length, inflorescence length, length of the longest raceme and thumb length were significantly positive association with grain yield per plant. Path coefficient analysis revealed that inflorescence length, plant height, length of the longest raceme, flag leaf blade length and number of productive tillers exhibited high direct positive effect on grain yield. Therefore, giving importance of these traits during selections may be useful for developing nutritionally superior high yielding kodo millet genotypes.

scholarly journals Correlation and Path Coefficient Studies in F2 Populations of Rice

2012 ◽  
Vol 4 (2) ◽  
pp. 124-127 ◽  
Author(s):  
Ghaffar KIANI ◽  
Ghorbanali NEMATZADEH
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Selection Criteria ◽  
Stepwise Regression ◽  
Path Coefficient ◽  
Direct Effects ◽  
Panicle Length ◽  
Path Coefficient Analysis ◽  
Yield Variation ◽  
Rice Genotypes

This study performed to determine the association between grain yield and yield components in fifty-four selected rice genotypes at F2 populations. Results showed that traits, the panicles per plant (r = 0.751) and filled grains per panicle (r = 0.458) correlated significantly with grain yield, while grain yield was negatively associated with non-filled grains per panicle (-0.297). Path coefficient analysis revealed that grain yield was associated with panicles per plant and filled grains per panicle with the direct effects of 0.691 and 0.568, respectively. The greatest indirect effect belonged to panicle length (0.301) through filled grains per panicle. Stepwise regression analysis showed that 72.1 percent of yield variation could be explained by three characters: the panicles per plant, filled grains per panicle and panicle length. Information obtained in this study revealed that traits, the panicles per plant and filled grains per panicle, could be used as selection criteria for grain yield improvement at segregating populations of rice.

scholarly journals Assessing Genetic Diversity of Rice Varieties under Drought Stress Conditions

2011 ◽  
Vol 3 (1) ◽  
pp. 114-123 ◽  
Author(s):  
Mina ABARSHAHR ◽  
Babak RABIEI ◽  
Habibollah SAMIZADEH LAHIGI
Keyword(s):  
Drought Stress ◽  
Grain Yield ◽  
Stress Tolerance ◽  
Geometric Mean ◽  
Minimum Variance ◽  
Stress Conditions ◽  
Productivity Index ◽  
Stress Index ◽  
Tolerance Index ◽  
Rice Varieties

In order to compare different rice genotypes grown under drought stress conditions a field experiment was conducted. In this study thirty different genotypes of native, breeded and upland cultivars were evaluated. Analysis of variance showed significant differences among genotypes in respect of all vegetative and morphological traits. Genotypes were devided into three groups by cluster analysis based on all studied traits with minimum variance method (Wards Method). The total average indicates significant differences among groups in respect of all morphological and physiological characteristics. In addition, eight drought stress tolerance indices including: sensitivity to stress index (SSI), drought response index (DRI), relative drought index (RDI), tolerance index (TOL), mean productivity index (MP), stress tolerance index (STI), geometric mean productivity index (GMP) and harmonic mean index (HM) were calculated according to their grain yield under drought stress and normal conditions. In general, results of this experimnet revealed that, among rice cultivars Domsephid, Deylamany, Hasansaraei, Sadri, Anbarboo and Domsiah had the highest sensitivity referring to drought stress and produced the lowest grain yield. Also, genotypes of IR24 (breeded of IRRI), Nemat, Sephidroud, Kadoos and Bejar (breeded of Iran) and Vandana, upland cultivar (originally from India) had the highest tolerance to drought stress and produced the highest grain yield. In conclusion, it was suggested that, these cultivars are suitable for drought stress conditions and are appropriate for hybridization with the aim of increasing drought tolerance.

Genetic variation and path analysis for yield and other agronomic traits in Nigella sativa L. germplasm

2019 ◽  
Vol 48 (3) ◽  
pp. 521-527
Author(s):  
Muhammad Sajjad Iqbal ◽  
Abdul Ghafoor ◽  
Muhammad Akbar ◽  
Shamim Akhtar ◽  
Sammer Fatima ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Grain Yield ◽  
Root Length ◽  
Agronomic Traits ◽  
Nigella Sativa ◽  
Crop Improvement ◽  
Path Coefficient ◽  
Root Weight ◽  
Days To Maturity ◽  
Improvement Programs

Thirty two genotypes of Nigella sativa L. were evaluated for three consecutive years which showed significant differences for all the traits indicating high level of genetic variation. Heritability in broad sense ranged from 0.28 to 0.98 and the highest heritability was calculated for days to maturity and days to flowers. Grain yield was positively associated with plant height, capsule weight, capsule length, root length, whereas negatively with capsule width and 1000-seed weight that required the use of novel breeding techniques to break this undesired linkage to improve grain yield in N. sativa. Path coefficient indicated that direct effects of all the traits were positive except days to first flower, days to 50% flowers, flowering duration, number of capsules, root weight and harvest index. The characters exhibiting correlation along with direct effect towards grain yield viz., days to maturity, capsule weight, capsule length and root length should be given more preference while selecting high yielding N. sativa genotypes for future crop improvement programs.

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