An analysis of hybrid sterility in rice using a diallel cross of 21 parents involving indica, japonica and wide compatibility varieties

Euphytica ◽  
1996 ◽  
Vol 90 (3) ◽  
pp. 275-280 ◽  
Author(s):  
K. D. Liu ◽  
Z. Q. Zhou ◽  
C. G. Xu ◽  
Qifa Zhang ◽  
M. A. Saghai Maroof
Keyword(s):  
Hybrid Sterility ◽  
Diallel Cross ◽  
Wide Compatibility

Advances in the understanding of inter-subspecific hybrid sterility and wide-compatibility in rice

2009 ◽  
Vol 54 (14) ◽  
pp. 2332-2341 ◽  
Author(s):  
YiDan Ouyang ◽  
JiongJiong Chen ◽  
JiHua Ding ◽  
QiFa Zhang
Keyword(s):  
Hybrid Sterility ◽  
Wide Compatibility

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 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.

COMBINING ABILITY FOR INHERITANCE OF ECONOMIC TRAITS IN OPIUM POPPY (Papaver somniferum L.)

2011 ◽  
Vol 24 (2) ◽  
pp. 01-08
Author(s):  
B. Kumar ◽  
N. K. Patra
Keyword(s):  
Combining Ability ◽  
Diallel Cross ◽  
Papaver Somniferum ◽  
Opium Poppy ◽  
Economic Traits ◽  
Degree Of Dominance ◽  
Parental Material ◽  
The Mean ◽  
Per Se ◽  
Important Medicinal Plant

Opium poppy (Papaver somniferum L.) is an important medicinal plant produces more than 80 alkaloids obtained from the capsules and straw of the plant. The estimate of combining ability gives an indication of the genetic behaviour of the parental material. It is therefore, desirable to select the parents for hybridization on the basis of their per se performance and combining ability effects. The F1, F2 and their reciprocals of an eight parent diallel cross in opium poppy were studied for combining ability of seven economic traits. The mean sum of squares due to GCA, SCA and reciprocals were significant for all the traits. The magnitude of GCA variances were invariably higher than those of SCA and thus indicating the preponderance of non-additive genetic variances, which was further affirmed by the measure of average degree of dominance i.e. ?(?2s/? 2g).  Among the parents VN35I for plant height, Sanchita and VG26 for capsules per plant, VN23, VN35I and Vivek for capsule index, VG26 and Sanchita for seed and straw yield per plant, and VN35I and VG20 for morphine content were found good general combiners. Earliness being a desired trait, parent VG20 having significant negative GCA estimates coupled with per se performance can be considered as good general combiner for early flowering. Inclusion of good general combiners in a multiple crossing program or an inter-mating population involving all possible crosses among them subjected to bi-parental mating may be expected to offer maximum promise in breeding for economic traits.DOI: http://dx.doi.org/10.3329/bjpbg.v24i2.17000

Development and Application of a Functional Marker for Wide Compatibility Gene S5-n of Rice

2009 ◽  
Vol 35 (11) ◽  
pp. 2000-2007 ◽  
Author(s):  
Jie YANG ◽  
Jun WANG ◽  
Qing CAO ◽  
Zhi-De CHEN ◽  
Wei-Gong ZHONG
Keyword(s):  
Functional Marker ◽  
Wide Compatibility
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