Spikelets per panicle

Balancing panicle-related traits such as panicle length and the numbers of primary and secondary branches per panicle, is key to improving the number of spikelets per panicle in rice. Identifying genetic information contributes to a broader understanding of the roles of gene and provides candidate alleles for use as DNA markers.

11p vinarcissa 21-03-2023 2 1   Download

Hence medium stature plant with long panicle, sturdy culms and more grains per panicle would be highly advantageous for this situation. Other important traits for simultaneous consideration for yield enhancement are spikelet fertility and 1000 seed weight.

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Analysis of variance indicated the existence of significant differences among the progenies for all the traits. Correlation co-efficients among grain yield and its fourteen attributing traits were estimated in two hundred F3 population of rice. The study revealed significant positive correlation of number of filled grains per panicle, spikelet fertility, total number grains per panicle, number of productive tillers per plant and 1000-grain weight with grain yield.

10p nguathienthan8 20-10-2020 15 2   Download

The investigation was carried out to estimate the component of genetic variability and associated parameters among 12 IRRI CMS lines and evaluated for morphological characteristics that influence outcrossing rate in hybrid rice. There was a marked variation in out crossing rate of CMS lines ranging from 18% to 45% under uniform weather conditions for all the CMS lines. Variation in plant height, number of panicle per plant and panicle length appeared to have an influence on outcrossing rate.

9p nguaconbaynhay7 15-08-2020 19 1   Download

The experimental was carried out at Indian Institute of Rice Research Farm, ICRISAT, Patencheru, Hyderabad, Telangana, India, during Rabi, 2014-2015 in order to estimate genetic variability, heritability and genetic advance in two hundred genotypes of rice. Analysis of variance revealed highly significant differences among the genotypes for all the characters indicating sufficient variability existed in the present material selected for the study.

9p nguaconbaynhay6 23-06-2020 16 1   Download

For the establishment of the distinctness among 31 accessions of Oryza glaberrima, eight morphological traits following Distinctness, Uniformity and Stability test (DUS) studied. Out of 31 accessions studied, two accessions viz., EC861804, EC861805 were found to be highly distinct as they possessed distinct traits namely purple split ligule, medium green leaves, erect flag leaf, presence of awn along with lodging tolerance indicating their usefulness as donors for crop improvement programmes. Analysis of variance revealed significant differences for all the characters studied.

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A field experiment entitled “Effect of soil application of silicon on growth and yield attributes of rice (Oryza sativa L.) was conducted in Kharif season 2017-18. Soil application of silixol granules was given at the time of mid-vegetative, mid-reproductive and mid-ripening stages of rice. The experiment was arranged as randomized block design with four treatments which replicated thrice.

7p angicungduoc5 14-06-2020 13 1   Download

Present study was conducted involving 54 rice hybrids to study standard heterosis expression for yield and some yield components characters viz., days to 50 per cent flowering, days to maturity, plant height, panicle length, productive tillers per plant, filled grains panicle-1 , total number of grains panicle-1 , spikelet fertility, test weight and grain yield plant-1.

8p trinhthamhodang1213 02-06-2020 23 1   Download

The present investigation was carried out during Kharif 2016 and 2017 at AICRIP, Agricultural Research Station, Mugad, UAS, Dharwad. Among 37 characters studied, the variation was observed in 30 characters viz.

8p cothumenhmong5 17-05-2020 14 2   Download

The present investigation was carried out during kharif 2016 at the Agricultural and Horticultural Research Station, Kathalagere and other five locations under University of Agricultural and Horticultural Sciences, Shivamogga, Karnataka, to know the stability of the Twenty three advanced genotypes including three checks of paddy. Highly significant differences among genotypes were observed for all the characters except number of number of tillers, panicles fertility percent.

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An experiment was conducted to study the inter-relationships, direct and indirect effects of various yield attributing characters towards grain yield per plant, at Rice Research Centre, Rajendranagar. In the experiment Grain yield per plant showed with productivity per day 0.99, number of productive tillers 0.67, spikelet fertility % 0.64, panicle weight 0.64, number of filled grains per panicle 0.64, panicle length 0.33, days to fifty % flowering 0.23, plant height 0.41, flag leaf width 0.32, 1000 grain weight 0.23 and grain breadth 0.32.

8p nguathienthan4 21-04-2020 16 0   Download

The present investigation for genetic variability was made based on the data recorded for sixteen yield and yield contributing quantitative and qualitative characters in twenty one rice genotypes using statistical tool.There are significant differences among the genotypes for all the characters under study showed by analysis of variance.

8p caygaocaolon4 04-04-2020 16 1   Download

The genetic parameters were studied to generate information on genetic variability, heritability and genetic advance among 22 advanced breeding lines including two checks at the experimental Farm of College of post graduate studies, CAU (Imphal), Umiam, Meghalaya during Kharif 2017. Analysis of variance indicated the existence of significant differences among the genotypes for most of the characters.

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This research was conducted at main experiment station of A.N.D.U.A. &T. Kumarganj, Ayodhya (U.P.) in rice growing season during 2015- 2016.To determine the direct and indirect effect of yield improving component on yield improvement. The material consist of 21 hybrids (F1) developed through crossing 7 lines with 3 testers.

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Genetic variability, genotypic and phenotypic coefficients of variation, heritability and genetic advance for twenty-one characters in twenty-eight parental lines of hybrid rice were studied. The analysis of variance revealed highly significant differences for all the characters among the genotypes. The magnitude of differences between PCV and GCV was relatively low for all the traits, indicating less environmental influence.

10p caygaocaolon3 09-03-2020 20 1   Download

The present investigation carried out on 25 rice genotypes during Kharif-2018 at field experimentation centre of Genetics and Plant Breeding, Naini Agricultural Institute, SHUATS, Prayagaraj to assess genetic variability, heritability and genetic advance. Analysis of variance showed highly significant genetic variability for all the 25 rice genotypes for 13 quantitative characters studied indicating that significant at 1% and 5% genetic variability present in the material.

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Twenty one genotypes were grouped into eight clusters based on D2 values for 11 characters. From the inter cluster D2 values of the eight clusters, it was found that the highest divergence occurred between cluster II and VI followed by cluster I and V, cluster IV and VIII, cluster V and VI, cluster V and VIII and cluster IV and V suggesting that the crosses involving varieties from these clusters would give wider and desirable recombination.

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Productivity of rice is negatively affected by drought. Morpho-physiological traits are key for plant adaptation under water stress condition. This study was conducted with the objective to study the 49 local land races of rice including checks in field and PVC pipes for screening drought tolerant genotypes based on their yield performance and the effect of various physiological traits associated with drought tolerance were studied. Results revealed significant yield decline in almost all the genotypes studied under drought condition as compared to irrigated condition.

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The experiment was carried out during Kharif, 2016-2017 with forty nine genotypes of rice under two soil condition viz. salinity and normal. Analysis of variance revealed highly significant differences among the genotypes for all the characters under both the conditions.

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A population panel comprising 126 newly developed restorer lines that can be utilized in hybrid rice breeding in future were evaluated for 16 agro-morphological and grain quality traits by principal component analysis for determining the pattern of genetic diversity and relationship among individuals.

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