scholarly journals Yield Stability of Very Early Rice Genotypes Under Rainfed Upland Ecosystem

2018 ◽  
Vol 3 (5) ◽  
Author(s):  
Ashok Mishra
Keyword(s):  
Yield Stability ◽  
Rainfed Upland ◽  
Rice Genotypes ◽  
Early Rice

scholarly journals Genetic diversity for drought and low-phosphorus tolerance in rice (Oryza sativa L.) varieties and donors adapted to rainfed drought-prone ecologies

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Somnath Roy ◽  
B. C. Verma ◽  
Amrita Banerjee ◽  
J. Kumar ◽  
Uday Sankar Ray ◽  
...  
Keyword(s):  
Oryza Sativa L ◽  
Abiotic Factors ◽  
Rice Varieties ◽  
Rainfed Rice ◽  
Phosphate Availability ◽  
Low Phosphorus ◽  
Low Phosphorus Tolerance ◽  
Rainfed Upland ◽  
Rice Genotypes ◽  
Hydroponic Study

AbstractDrought and phosphate availability are two major abiotic factors limiting productivity of rice in rainfed upland areas. There has been a constant need for new improved donor with tolerance to multiple abiotic stress conditions for rainfed rice breeding. In the present study, a set of 32 popular rice varieties and landraces were evaluated for drought and low-phosphorus (P) tolerance, and also characterized using grain yield under reproductive drought QTLs (DTY QTLs) and Pup1 linked/specific molecular markers. Twenty-seven genotypes were identified as tolerant to moderately tolerant to drought. The SSR markers linked to ten DTY QTLs classified the genotypes into two groups corresponding to aus and indica. The tolerant genotypes were distributed under both groups. Based on the core markers of Pup1 locus, complete tolerant haplotype was recorded in nine genotypes other than the tolerant check Dular. Nine more genotypes showed the incomplete tolerant haplotypes. The rice genotypes showed significantly high genetic variability for low-P tolerance in hydroponic study. A few genotypes revealed non-Pup1 type tolerance which needs further confirmation.

scholarly journals Genotype by environment interaction and stability analysis for rice genotypes under Boro condition

Genetika ◽  
2014 ◽  
Vol 46 (2) ◽  
pp. 521-528 ◽  
Author(s):  
Lotan Bose ◽  
Nitiprasad Jambhulkar ◽  
Kanailal Pande
Keyword(s):  
Interaction Analysis ◽  
Block Design ◽  
Principal Component ◽  
Stability Index ◽  
Yield Stability ◽  
Environment Interaction ◽  
Multiplicative Interaction ◽  
Genotype Effect ◽  
Rice Genotypes ◽  
Stability Statistics

Genotype (G)?Environment (E) interaction of nine rice genotypes possessing cold tolerance at seedling stage tested over four environments was analyzed to identify stable high yielding genotypes suitable for boro environments. The genotypes were grown in a randomized complete block design with three replications. The genotype ? environment (G?E) interaction was studied using different stability statistics viz. Additive Main effects and Multiplicative Interaction (AMMI), AMMI stability value (ASV), rank-sum (RS) and yield stability index (YSI). Combined analysis of variance shows that genotype, environment and G?E interaction are highly significant. This indicates possibility of selection of stable genotypes across the environments. The results of AMMI (additive main effect and multiplicative interaction) analysis indicated that the first two principal components (PC1-PC2) were highly significant (P<0.05). The partitioning of TSS (total sum of squares) exhibited that the genotype effect was a predominant source of variation followed by G?E interaction and environment. The genotype effect was nine times higher than that of the G?E interaction, suggesting the possible existence of different environment groups. The first two interaction principal component axes (IPCA) cumulatively explained 92 % of the total interaction effects. The study revealed that genotypes GEN6 and GEN4 were found to be stable based on all stability statistics. Grain yield (GY) is positively and significantly correlated with rank-sum (RS) and yield stability index (YSI). The above mentioned stability statistics could be useful for identification of stable high yielding genotypes and facilitates visual comparisons of high yielding genotype across the multi-environments.

scholarly journals Evaluation of Some Promising Rice Genotypes for Grain Yield Stability Using AMMI Model

2019 ◽  
Vol 6 (4) ◽  
pp. 167-171
Author(s):  
Ehirim B O ◽  
Bashir M ◽  
Gana A S ◽  
Salaudeen M T ◽  
Tolorunse K D ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Stability ◽  
Ammi Model ◽  
Rice Genotypes

scholarly journals Genotype × Environment Interaction and Yield Stability Analysis in Hybrid Rice (Oryza sativa L.) By AMMI Biplot

2016 ◽  
Vol 19 (2) ◽  
pp. 83-90 ◽  
Author(s):  
Anowara Akter ◽  
M Jamil Hasan ◽  
MU Kulsum ◽  
MH Rahman ◽  
AK Paul ◽  
...  
Keyword(s):  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Block Design ◽  
Yield Stability ◽  
Environment Interaction ◽  
Stability Performance ◽  
Genotype Environment Interaction ◽  
Rice Genotypes ◽  
Rice Improvement ◽  
Main Effects

CORRECTION: Due to a number of formatting and layout issues, the PDF of this paper was replaced on 10th October 2016. The page numbers of this article have changed from 79-86 to 83-90.Assessing the adaptability and stability of promising rice genotypes is one of the important steps for accurate evaluation. This study determined the genotype × environment interaction (GEI) and stability performance of 12 promising rice genotypes in four environments during 2009 Aman season. The experiment used randomized complete block design with three replications. Yield stability and adaptability of yield performance were analyzed by combined analysis and additive main effects and multiplicative interaction (AMMI) model. The environment, genotype main effects, and the GEI were all highly significant (P<0.001). The study indicated that the tested genotypes, such as BRRHA G1 (5.47 tha-1), G2 (5.68 tha-1), G3 (6.29 tha-1) and G4 (5.27 tha-1) had higher average yields, which indicated these genotypes adapted to favourable environments (E1 and E3). Whereas the environment, E3 could be regarded as a more stable site for high yielding hybrid rice improvement than the other locations. Based on AMMI biplot analysis, genotypes BRRI1A/BRRI827R (G1), IR58025A/BRRI10R (G2), BRRI 10A/BRRI 10R (G3) and BRRI hybrid dhan1 (G4) have higher average mean yields with high main (additive) effects and positive IPCA1 score, among them BRRI 10A/BRRI10R (G3) being the overall best. Locations E1 and E3 could be regarded as a good selection site for rice hybrid improvement due to stable yields.Bangladesh Rice j. 2015, 19(2): 83-90

scholarly journals Daya Hasil dan Stabilitas Ratun Galur Padi pada Lahan Pasang Surut

2015 ◽  
Vol 34 (2) ◽  
pp. 97 ◽  
Author(s):  
Parlin H. Sinaga ◽  
Trikoesoemaningtyas Trikoesoemaningtyas ◽  
Didy Sopandie ◽  
Hajrial Aswidinnoor
Keyword(s):  
Grain Yield ◽  
Crop Yield ◽  
Environmental Changes ◽  
Soil Surface ◽  
Rice Production ◽  
Yield Stability ◽  
Dry Milling ◽  
Ratoon Crop ◽  
Main Crop ◽  
Rice Genotypes

<p>The study was aimed to determine the productivity and yield stability of ratoon rice genotypes in three environments and to obtain rice genotypes suistable for ratoonning on specific environment of tidal land. The experiment was designed in a randomized complete block with three replicates. Seedling was planted at 21 days old with spacing of 20 x 20 cm, one seedling per hill. Plants were harvested 30 days after heading by cutting at a height of 10 cm from the soil surface. One day after harvest, the land was irrigated as high as 3 cm and fertilized with Urea 50 kg/ha, TSP 30 kg/ha, and KCl 25 kg/ha. Yield stability was analyzed according to Eberhart and Russel (1966). Ratoons were sensitive to the environmental changes. Genotype IPB97-F-13-1-1, IPB 4S, and IPB 3S produced the main crop + ratoon grain yield of 5.26 t/ha, 5.14 t/ha, and 5.64 t/ha dry milling grain (DMG), respectively. Based on yield of the main crop + ratoon, IPB97-F-13-1-1 and IPB 4S was each considered as adaptable to the suboptimum condition (bi&lt;1). Ratoon crop yield of genotype IPB97-F-13-1-1, IPB 4S, and IPB 3S each was the highest in three locations. The ratoon crop contribution to the rice production was from 31.3% to 61.9% to the main crop.</p>

scholarly journals Grain Yield Stability of Rice Genotypes

2020 ◽  
Vol 3 (2) ◽  
pp. 116-126
Author(s):  
Jiban Shrestha ◽  
Ujjawal Kumar Singh Kushwaha ◽  
Bidhya Maharjan ◽  
Manoj Kandel ◽  
Suk Bahadur Gurung ◽  
...  
Keyword(s):  
Grain Yield ◽  
Climatic Factors ◽  
Block Design ◽  
Genotype By Environment Interaction ◽  
Yield Stability ◽  
Soil Conditions ◽  
Environment Interaction ◽  
Gge Biplot ◽  
Rice Genotypes ◽  
B 31

Stability analysis identifies the adaptation of a crop genotype in different environments. The objective of this study was to evaluate promising rice genotypes for yield stability at different mid-hill environments of Nepal. The multilocation trials were conducted in 2017 and 2018 at three locations viz Lumle, Kaski; Pakhribas, Dhankuta; and Kabre, Dolakha. Seven rice genotypes namely NR11115-B-B-31-3, NR11139-B-B-B-13-3, NR10676-B-5-3, NR11011-B-B-B-B-29, NR11105-B-B-27, 08FAN10, and Khumal-4 were evaluated in each location. The experiment was laid out in a randomized complete block design with three replications. The rice genotype NR10676-B-5-3 produced the highest grain yield (6.72 t/ha) among all genotypes. The growing environmental factors (climate and soil conditions) affect the grain yield performance of rice genotypes. The variation in climatic factors greatly contributed to the variation in grain yield. Polygon view of genotypic main effect plus genotype-by-environment interaction (GGE) biplot showed that the genotypes NR10676-B-53 and NR11105-B-B-27 were suitable for Lumle; NR11115-B-B-31-3 and NR11139-B-B-B-13-3 for Pakhribas; and 08FAN10 and NR11011-B-B-B-B-29 for Kabre. The GGE biplot showed that genotype NR10676-B-5-3 was stable hence it was near to the point of ideal genotype. This study suggests that NR10676-B-5-3 can be grown for higher grain yield production in mid-hills of Nepal.

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