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Hybrid rice (Oryza sativa L.)
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Poor grain plumpness (GP) is one of the main constraints to reaching the yield potential of hybrid rice. In this study, the GP of 177 rice varieties was investigated in three locations across 2 years. By combining the genotype data of 261 simple sequence repeat (SSR) markers, association mapping was conducted to identify the marker-GP association loci.
9p
vinarcissa
21-03-2023
2
1
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A field experiment was conducted during kharif season of 2019 at the Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, SHUATS, Prayagraj (U.P.) to evaluate rice (Oryza sativa L.) hybrids under agro-climatic conditions of U.P. The experiment was carried out to find the performance of 10 hybrids, which laid out in Randomized Block Design (RBD) & replicated thrice.
10p
chauchaungayxua12
29-07-2021
10
1
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An investigation was taken up to study the magnitude of heterosis for nine characters in rice viz., days to 50 percent flowering, days to maturity, plant height at maturity, productive tillers per plant, tillers per square meter, thousand grain weight, grains per panicle, and yield per plant. The base material for this experiment consisted of 36 F1s involving three cytoplasmic male sterile lines (CMS) and twelve diverse restorers in line x tester mating design along with best varietal check Phule Samruddhi and best hybrid check Sahyadri-4.
8p
chauchaungayxua12
29-07-2021
17
1
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The general combining ability (GCA) of parents in hybrid rice affects not only heterotic level of grain yield and other important agronomic traits, but also performance of grain quality traits of F2 bulk population which is the commodity consumed by humans.
16p
vijeeni2711
24-07-2021
10
0
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In the present research work six CMS lines viz., JMS 11A, JMS 21A, CMS 11A, CMS 23A, CMS 52A and JMS 18A were mated with seven testers viz., JGL 32979, JGL 32994, JGL 33060, JGL 33080, JGL 33366, JGL 34561 and JGL 34564 in Line X Tester mating design resulting in 42 hybrids. The parents and their 42 hybrids along with four checks (US 312, 27P63, NLR 34449 and TN 1) were evaluated by planting in Randomized Block Design with two replications at Regional Agricultural Research Station, Polasa, Jagtial.
19p
chauchaungayxua11
23-03-2021
20
2
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The present study aims at studying the genetic variability using parameters like GCV, PCV, heritability, genetic advance and identifying parents with high genetic divergence to use them in future hybridization programmes.
8p
chauchaungayxua10
18-03-2021
17
2
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The major yield advantages are related to proper crop establishment, efficient utilization of the natural resources and better weeds suppression due to proper plant population and together with other agronomic cultural practices. But in Jharkhand situation, information on optimum seed rate of suitable hybrid rice for aerobic is very meager.
7p
cothumenhmong9
18-01-2021
14
2
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Breeding for high yield crops require information on nature and magnitude of variation in the available material, relationship of yield with other agronomic characters and the degree of environmental influence on the expression of these component characters. Since grain yield in rice is quantitative in nature and polygenically controlled, effective yield improvement and simultaneous improvement of yield components are imperative.
8p
gaocaolon9
22-12-2020
17
1
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A study was undertaken to elicit information on the identification of maintainers and restorers for their utilization in hybridization programme as the parental lines. Hybrid rice is the best practically feasible and readily acceptable options available to increase the production. For the development of viable, adoptable rice hybrids through utilization of cytoplasmic genetic male sterility, the processes of identification of maintainers and restorers involving local elite lines has become inevitable.
5p
angicungduoc8
07-11-2020
13
1
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To study the heterosis using wild abortive(WA) CMS lines on yield, quality and drought related traits in rice, 56 experimental hybrids were produced using Three WA CMS lines (Pusa 6A, IR79156A and IR 68897A) and 31 male genotypes. The present study showed that superior performance for all characters was not expressed in a single hybrid combination.
10p
nguaconbaynhay8
13-10-2020
11
1
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Rice plants require a particular temperature for its phonological affair such as panicle initiation; flowering, panicle exertions from flag leaf sheath and maturity and these are very much influenced by the planting dates during India season. Rice seeded before the window of optimum dates usually has slow germination and emergence, poor stand establishment and increased damages from soil borne seedling diseases.
10p
trinhthamhodang1215
23-09-2020
13
1
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The present investigation was under taken in this context to elucidate information on variability, heritability, genetic advance, character associations and path of effect in promising rice genotypes. A good knowledge of genetic resources might also help in identifying desirable genotypes for future hybridization program.
3p
caygaocaolon7
18-09-2020
14
1
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A field trial was conducted to investigate the effect of spatial distribution and different levels of nitrogen on growth of hybrid rice variety PA 6201, comprising of 16 different treatments using randomized complete block design with three replications at agronomy research farm of Narendra Deva University of Agriculture and Technology, Faizabad (U.P.), India during the season of Kharif in the year 2012. It was found that the spacing of 20×15 cm was found significantly superior over other geometric configurations and at par with closer spacing 20×10 cm for the entire growth characteristics.
10p
trinhthamhodang7
31-08-2020
29
1
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This paper present investigation was carried out with a view to develop a package involving optimization of nitrogen doses and variety for the overall improvement of productivity of hybrid rice.
6p
kethamoi7
26-08-2020
9
2
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The present investigation was conducted during kharif season of 2014 at N.E. Borlaug Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand) to optimizing the seed rate of hybrid and high yielding varieties of rice under direct seeded aerobic condition. Treatments were tested in a split plot design with three replications keeping varieties in main-plots and seed rates in sub-plots.
6p
nguaconbaynhay6
24-06-2020
8
0
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Thirty two hybrids developed from crossing four CMS lines with 8 restorers were studied among with parents for 14 yield and yield attributing characters. Among the male parental lines, JGL 18047, IET 26264 and RNR 26060 appeared the best general combiners for yield and important yield component traits. The most promising specific cross combinations were JMS 13A x RNR 26060 and CMS 64A x WGL 14 for grain yield and most of the component characters.
7p
angicungduoc5
14-06-2020
13
0
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In view to invigorate hybrid rice breeding and exploration of heterosis in untapped, low productive genetic pool of non-basmati aromatic rice, altogether thirtyF1’s were generated in L x T design fashion with thirteen parents (3 testers and 10 lines), and were evaluated along with the parents to unravel the combining ability for 28 yield and yield contributing traits. The study revealed importance of both additive and non-additive gene effects in governing yield and yield components with preponderance of non-additive gene action for most of the yield components.
15p
angicungduoc5
12-06-2020
27
2
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The present investigation was carried during Kharif 2015-16 at Agricultural College Farm, Bapatla to estimate the combining ability and to determine the nature and magnitude of heterosis for yield and yield component traits in rice. The experimental material consisted of 21 hybrids produced by crossing three cytoplasmic male sterile lines with seven elite testers in Line x Tester design.
7p
nguathienthan5
04-06-2020
16
0
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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
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A field experiment was conducted during the kharif (July-November) season of 2017 at Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, SHUATS, Allahabad to evaluate the effects of foliar application of Iron and Zinc with age of seedlings on yield attributes and economics of Hybrid Rice (Oryza sativa L.).
7p
cothumenhmong5
17-05-2020
25
1
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