scholarly journals High-Yielding Performance of Paddy Rice Achieved in Yunnan Province, China. I. High yielding ability of Japonica F1 hybrid rice, Yu-Za 29.

1996 ◽  
Vol 65 (1) ◽  
pp. 16-21 ◽  
Author(s):  
Takahisa AMANO ◽  
Chang-Jun SHI ◽  
De-Lin QIN ◽  
Makoto TSUDA ◽  
Yasuhiro MATSUMOTO
Keyword(s):  
Yunnan Province ◽  
Hybrid Rice ◽  
Paddy Rice ◽  
F1 Hybrid ◽  
Yielding Ability

scholarly journals High-Yielding Performance of Paddy Rice Achieved in Yunnan Province, China. II. Spikelet production of Japonica F1 hybrid rice, Yu-Za 29.

1996 ◽  
Vol 65 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Takahisa AMANO ◽  
Chang-Jun SHI ◽  
De-Lin QIN ◽  
Makoto TSUDA ◽  
Yasuhiro MATSUMOTO
Keyword(s):  
Yunnan Province ◽  
Hybrid Rice ◽  
Paddy Rice ◽  
F1 Hybrid

scholarly journals IDENTIFICATION OF WIDE COMPATIBILITY VARIETIES IN SOME TROPICAL JAPONICA RICE

2013 ◽  
Vol 6 (1) ◽  
pp. 28 ◽  
Author(s):  
A. Hairmansis ◽  
Hajrial Aswidinnoor ◽  
Trikoesoemaningtyas Trikoesoemaningtyas ◽  
Suwarno Suwarno
Keyword(s):  
Hybrid Rice ◽  
Block Design ◽  
Hybrid Sterility ◽  
Japonica Rice ◽  
Rice Varieties ◽  
Major Barrier ◽  
F1 Hybrid ◽  
Tropical Japonica ◽  
Wide Compatibility ◽  
Randomized Complete Block Design

The F1 hybrid sterility in indica/japonica crosses is the major barrier in developing hybrid rice varieties between these two diverse germplasm. The sterility problem in japonica/indica hybrids can be overcome by using wide compatibility genes. The objective of this study was to identify wide compatibility varieties (WCVs) in some tropical japonica rice. Twenty five tropical japonica varieties as male parents were crossed with indica (IR64) and japonica (Akitakomachi) testers as female parents. The crosses were planted following a randomized complete block design with three replications. Varieties having average spikelet fertility of more than 70% with both the indica and japonica testers were rated as WCVs. Result from this study showed that six tropical japonica varieties were classified as WCVs, i.e., Cabacu, Grogol, Kencana Bali, Klemas, Lampung Lawer, and Napa. Hybrid sterility is caused by partial sterility of male and female gametes. The WCVs from the present study can be used in hybrid rice breeding program to solve hybrid sterility in indica/japonica hybrids.

scholarly journals Studies on dry matter and grain production of F1 hybrid rice in China. II. Characteristic of grain production.

1990 ◽  
Vol 59 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Xiang fu SONG ◽  
Waichi AGATA ◽  
Yoshinobu KAWAMITSU
Keyword(s):  
Dry Matter ◽  
Hybrid Rice ◽  
Grain Production ◽  
F1 Hybrid

scholarly journals Genetic Diversity Analysis in Exotic Hybrid Rice Genotypes Grown During Wet Season in Bangladesh

2016 ◽  
Vol 13 (2) ◽  
pp. 89-96
Author(s):  
A Ahmed ◽  
S G Shaon ◽  
M S Islam ◽  
P S Saha ◽  
M A Momin
Keyword(s):  
Genetic Diversity ◽  
Hybrid Rice ◽  
Growth Parameters ◽  
Block Design ◽  
Wet Season ◽  
Growth Duration ◽  
F1 Hybrid ◽  
Mean Values ◽  
Rice Genotypes ◽  
Almost All

Two experiments were conducted with 43 IRRI developed F1 hybrid rice genotypes  (HRDC) for ten agronomic characters in a randomized complete block design to study the genetic diversity through multivariate analysis in Gazipur and Pabna districts, respectively during wet season 2013. On the basis of D2 values, the genotypes were grouped into five different clusters. During wet season, cluster III comprised maximum number of genotypes (15). The data obtained across locations showed that there are significant differences among HRDC genotypes for all growth parameters, yield and yield components. The highest yield (5.65 t ha-1) was observed in HRDC 1341 because of produced heaviest panicle (4.28 g) and the lowest (2.48 t ha-1) in HRDC 1311 because of obtained lowest fertility (49.9 %) and 1000-grain wt. (12.9 g), respectively. The maximum inter-cluster distances were observed between cluster I and V (11.63) and the minimum between cluster III and IV (2.35). The highest intra-cluster distance (1.73) was observed in cluster III and minimum in cluster I (0.00), since it consisted with one genotype. Difference in cluster means existed for almost all the characters studied. Among the characters, growth duration, spikelet panicle-1, fertility (%) and 1000-grain wt contributed the most for divergence in the genotypes. The highest mean values for fertility percentage, panicle weight and 1000 grain wt. but early flowering and short maturing genotypes were grouped into Cluster II followed by Cluster III and IV indicating that the genotypes have genetic potentiality to contribute better for yield maximization of hybrid rice.The Agriculturists 2015; 13(2) 89-96

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