Heterosis for yield and yield attributes in rice (Oryza sativa L.)

Sravan, T.; Jaiswal, H. K.; Waza, Showkat A.; Kumari, Priyanka

doi:10.31018/jans.v8i2.847

Cited by 5 publications

(10 citation statements)

References 11 publications

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“…These crosses having the parents with good general combining ability effects for grain yield. Similar findings were also reported by Kumari et al (2014) and Sarvan et al (2016) for grain yield, panicle length, productive tillers per plant, days to maturity, days to flowering, plant height in rice crop in Varanasi (India). All six promising crosses for higher grain yield having both parents with good x good GCA effects could be due to additive gene action which is fixable in nature and may be exploited further using pedigree method of breeding for the development of pure lines in rice crop.…”

Section: Resultssupporting

confidence: 89%

“…At national level, the area under rice cultivation is 42.5 million hectares with the production of 152.6 million tones and an average productivity is of 3.5 tones/hectares. At global level, rice is cultivated under 158.4 million hectares area with an annual production of around 697.2 million tones and an average productivity of 2.85 tones/ hectares (Sarvan et al 2016). In designing an efficient breeding programme, the breeder faces a major problem of choosing parents for hybridization.…”

Section: Introductionmentioning

confidence: 99%

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Estimates of combining ability and standard heterosis for grain yield and various agromorphological traits in rice (Oryza sativa L.)

Kamboj

Kumar

Singh

2017

JANS

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A study was conducted for estimating combining ability and standard heterosis for grain yield and various agromorphological traits involving 10 parents and their 45 F1s (half diallel) during 2012-13 and 2013-14. The results of present investigation revealed that additive gene action played a predominant role in the inheritance of most of the traits under study. On the basis of general combining ability (GCA) effects and specific combining ability (SCA) effects, three parents (Vallabh Basmati 21, Pusa Basmati 1, CSR 13) and three crosses (Vallabh Basmati 21 x Pusa 1121, Pusa 1121 x CSR 13 and Pusa Basmati 1 x CSR 13) were found good general and specific combiners. The best combinations mostly involved good x good and good x poor parental GCA effects suggesting that there is addi-tive x additive and additive x dominance type of gene action for yield and other component traits. The cross showing additive gene action can be improved by pedigree breeding and selection can be postponed to later generations. The most appropriate breeding method for the exploitation of non additive gene action will be heterosis breeding. The six best cross combinations (Vallabh Basmati 21 x CSR 30, CSR 30 x CSR 13, Vallabh Basmati 21 x CSR 13, CSR 30 x Pusa basmati 1, Pusa basmati 1 x CSR 13 and Vallabh Basmati 21 x Pusa basmati 1) had significant standard heterosis for grain yield and other component traits. The crosses which showed significant standard heter-osis is highly suitable for commercial exploitation of heterosis in rice crop.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Estimates of combining ability and standard heterosis for grain yield and various agromorphological traits in rice (Oryza sativa L.)

Kamboj

Kumar

Singh

2017

JANS

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“…However, the highest estimates values of mid parent heterosis were recorded for grain yield /plant in the same crosses with the same ranking, their estimated values were (68.19, 35.6 and 18.93), respectively. These results were similarly with these reported by El-Rewainy et al (2011), Chougule et al (2012, Hussain and Sanghera (2012), Nevame et al (2012), Reddy et al (2012), and El-Naem (2014).…”

Section: -Grain Yield/plantsupporting

confidence: 91%

BREEDING STUDIES ON SOME AGRONOMIC AND QUALITY TRAITS IN RICE(Oryza sativa L.)

Salem

Ayoub

Yassin

et al. 2015

Journal of Productivity and Development

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This study was aimed to study the heterosis, degree of dominance and minimum number of effective factors for yield components (Panicle length, Panicle weight and Grain yield/plant) and some grain quality traits in rice (Hulling percentage, Milling percentage and Head rice percentage) under normal conditions. The materials for this study consisted of six rice genotypes namely; Sakha101, Sakha102, Egyptian Yasmin, GZ1368s-5-4, IET1444 and IR78875-176-B2-B, These genotypes have a wide range of variation due to their different genetic background. The six rice parents were crossed to produce F 1 hybrid seeds of three crosses, namely, Sakha101 x GZ1368s-5-4(I), Sakha102 x IET1444(II) and Egyptian Yasmin x IR78875-176-B2B(III). The six populations, P 1 , P 2 , F 1 , F 2 , BC 1 and BC 2 for each cross were utilized to determine the genetic parameters of the studied characters. The results revealed that heterosis better parent values were highly significant in positive direction for all traits in all crosses in agronomy characters except for the cross III in panicle length character were negative direction. The mid parent values were highly significant in positive direction for all traits in all crosses in agronomy characters except for the cross I for panicle weight and cross III for panicle length character. Degree of dominance values were less than unity in the positive direction for the crosses I, II and III, for all agronomic traits except for cross II in traits panicle weight and grain yield\ plant and the cross III in Grain yield\ plan trait were negative direction, indicating the importance of partial dominance in the inheritance of this trait in these crosses, Moreover, the Castle-Wright formula revealed that the estimated values of minimum number of gene in Panicle length trait in the crosses I and II is simple trait governed by one or two pairs of genes while the cross III governed by large number of genes (-12.63). Panicle weight trait was controlled by less than two pairs of genes suggested that trait is qualitative character in the crosses I and III while the crosses II governed by large number of pair of genes more than 9 pair of genes. Meanwhile, 212 KHALED M. SALEM et al. the Grain yield\ plant trait governed by large number of genes in the three crosses suggested that trait is quantitative character. On the other hand, the heterosis of quality traits revealed the hulling trait in mid parents and better parent were no significant except the cross II in mid parent while milling and head rice traits were highly significant in negative direction except the cross III in better parent to two traits. Obviously. degree of dominance values were less than unity in the negative direction for all crosses of hulling and milling traits for each crosses except the cross III were positive direction to two traits while the head rice trait was less than unity in all crosses in the positive direction except the cross I was negative. These results indicating the importance of partial dominance in the inheritance of this tra...

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“…For days to 50 percent flowering and kernel breadth, negative values of combining ability are generally considered to be desirable; while for rest of the traits, positive estimates of combining ability effects are usually preferable [5]. The estimates of GCA effect for different agromorphological traits revealed that the significant negative GCA effect in CMS lines for days to 50% flowering was exhibited by SKUA-7A (Table 3).…”

Section: Resultsmentioning

confidence: 99%

“…The hybrid rice technology leads to the increase in yield potential of rice varieties by 15 to 20 percent over the pure line commercial cultivars. In India, the average productivity of rice is about 4 t ha -1 and hybrid rice varieties can produce a marked improvement of up to 1-1.5 t ha -1 [4,5]. Among the various approaches, three-line system has become a practical option for hybrid production in rice.…”

Section: Introductionmentioning

confidence: 99%

Combining Ability Effects for Various Agro-Morphological Traits in Rice under Temperate Conditions

Parray

Najeeb

Shikari

et al. 2020

CJAST

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Rice is one of the most consumed food crops in the world and therefore possesses huge socio-economic relevance. Combining ability estimates provide the basis for selection of suitable parents in breeding programmes for rice improvement. The experiment was conducted to evaluate the combining ability effects for various agro-morphological traits in some genotypes of rice. Thirty-four male parents were crossed with the four CMS lines in line × tester matting design and 136 cross combinations were obtained. For most of the traits, SKUA-7A showed desirable GCA effect among the female parental lines; while RL-1, RL-2, RL-11, SKUA-497, SKUA-494, SKUA-496 and SKUA-420 showed desirable GCA effect amongst the male parents. Cross combinations SKUA-7A × RL-3 and SKUA-11A × RL-5 revealed desirable heterosis for most of the traits viz., grain yield, number of effective tillers plant-1, panicle length and number of spikelet panicle-1. These cross combinations also possessed desirable values of SCA effect. In general, the cross combinations showing desirable specific combining ability effects also reveal better per se performance for the respective traits.

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Heterosis for yield and yield attributes in rice (Oryza sativa L.)

Cited by 5 publications

References 11 publications

Estimates of combining ability and standard heterosis for grain yield and various agromorphological traits in rice (Oryza sativa L.)

Estimates of combining ability and standard heterosis for grain yield and various agromorphological traits in rice (Oryza sativa L.)

BREEDING STUDIES ON SOME AGRONOMIC AND QUALITY TRAITS IN RICE(Oryza sativa L.)

Combining Ability Effects for Various Agro-Morphological Traits in Rice under Temperate Conditions

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