Hybrid Rice Seed Production

10.1142/7631 ◽  
2011 ◽  
Author(s):  
Shihua Cheng ◽  
Liyong Cao ◽  
Haipeng Zhou
Keyword(s):  
Seed Production ◽  
Hybrid Rice ◽  
Rice Seed

scholarly journals Detection of QTLs for Outcrossing-Related Traits in CSSL Population Derived from Primitive Japonica Accession Ludao in the Genetic Background of O. sativa spp. Japonica Restorer C-bao Using RSTEP-LRT Method

Agronomy ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 28
Author(s):  
Lal Bux ◽  
Dalu Li ◽  
Muhammad Faheem ◽  
Nour Ali ◽  
Muzafar Hussain Sirohi ◽  
...  
Keyword(s):  
Seed Production ◽  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Flag Leaf ◽  
Leaf Angle ◽  
Ratio Test ◽  
Phenotypic Variance ◽  
Rice Seed ◽  
Hybrid Seed Production ◽  
Cms Line

The outcrossing traits in rice (Oryza sativa L.) affect the yield of hybrid seed production. Using a cytoplasmic male sterile (CMS) line with good outcrossing traits, such as short flag leaf length (FLL), narrow flag leaf width (FLW), wide flag leaf angle (FLA), and elongated panicle neck length (PNL), for hybrid rice seed production, it is possible to avoid the procedure of cutting flag leaves and make the supplementary pollination feasible by machine. In this study, a japonica restorer C-bao as the receptor parent and a primitive japonica accession Ludao as the donor parent were used to construct a chromosome segment substitution line (CSSL) population. The CSSL population was used to detect quantitative trait loci (QTLs) for the four outcrossing traits using a likelihood ratio test based on the stepwise regression (RSTEP-LRT) method. The CSSL population constructed consisted of 163 lines covering 90.7% of the donor genome. Among the seven QTLs detected in the CSSL population, four QTLs were detected in both years. qFLL-4 explained 6.70% of the two-year-averaged phenotypic variance, and the alleles from Ludao decreased FLL 5.1 cm. qFLA-1.1 and qFLA-1.2 explained 7.85% and 21.29% of the 2-year-averaged phenotypic variance respectively, and the alleles from Ludao increased FLA 17.38° and 31.50°. qPNL-8 explained 8.87% of the 2-year-averaged phenotypic variance, and the alleles from Ludao increased PNL 4.44 cm. These favorable alleles identified could be used to improve the outcrossing traits of parents for hybrid rice seed production in rice.

scholarly journals A method for mechanized hybrid rice seed production using female sterile rice

Rice ◽  
2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Yumei Xia ◽  
Ning Tang ◽  
Yuanyi Hu ◽  
Ding Li ◽  
Shuangcheng Li ◽  
...  
Keyword(s):  
Seed Production ◽  
Hybrid Rice ◽  
Rice Seed

scholarly journals Fine-Tuning of Eui1: Breaking the Bottleneck in Hybrid Rice Seed Production

2018 ◽  
Vol 11 (5) ◽  
pp. 643-644 ◽  
Author(s):  
Shaopei Gao ◽  
Chengcai Chu
Keyword(s):  
Seed Production ◽  
Hybrid Rice ◽  
Fine Tuning ◽  
Rice Seed

scholarly journals Effect Of Ga3 And Row Ratio On Floral Traits Of Component Lines Of BRRI Hybrid Dhan2

2013 ◽  
Vol 38 (1) ◽  
pp. 155-163 ◽  
Author(s):  
MH Rahman ◽  
MM Khatun ◽  
MSR Khan ◽  
MM Haque ◽  
MG Rasul
Keyword(s):  
Seed Production ◽  
Hybrid Rice ◽  
Environmental Influence ◽  
Floral Traits ◽  
Rice Seed ◽  
Filament Length ◽  
Anther Length ◽  
Cms Line ◽  
Stigma Exsertion ◽  
Stigma Exsertion Rate

Component lines (A and R lines) of BRRI hybrid dhan2 were assessed under treatment of GA3 application and row ratio on days to 5% and 50% flowering, duration of opening of floret, angle of open floret, filament length, anther length, stigma length, panicle exsertion rate, stigma exsertion rate and outcrossing rate. The CMS line viz; BRRI 10A have been found to be usable female parents for hybrid rice seed production due to their stigma length, stigma exsertion rate, duration of blooming, anther length and filament length. The different between genotypic and phenotypic variation was not remarkable for most of the characters studied indicating negligible environmental influence on the traits. The maximum duration of opening of floret (158.10 min) and angle of floret opening (28.870) were obtained with the application of 350 g GA3 ha-1. The improvement in the floral traits with increased GA3 level might be due to increased availability of GA3 which enhanced floral traits. The CMS line can be used as potential female parent in hybrid rice seed production of BRRI hybrid dhan2. Bangladesh J. Agril. Res. 38(1): 155-163, March 2013 DOI: http://dx.doi.org/10.3329/bjar.v38i1.15202

scholarly journals Assessment of yield and physiological parameters in (KRH-2) hybrid rice seed production (A×R) by using exogenous gibberellic acid

2015 ◽  
Vol 10 (2) ◽  
pp. 113-117 ◽  
Author(s):  
M. CHANDRA NAIK ◽  
M.K. MEENA ◽  
T.C. SUMA ◽  
VASUDEV PALTHE ◽  
SREEDEVI S. CHAVAN ◽  
...  
Keyword(s):  
Gibberellic Acid ◽  
Seed Production ◽  
Hybrid Rice ◽  
Physiological Parameters ◽  
Rice Seed
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