Analysis of combining ability in soybean cultivars

Gavioli, Eduardo Antonio; Pérecin, Dilermando; Mauro, Antônio Orlando Di

doi:10.12702/1984-7033.v06n02a02

Cited by 8 publications

(13 citation statements)

References 5 publications

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“…The highly significant GCA and SCA for duration to maturity (P<0.01) suggested that both the additive and non-additive gene action was important in determination of this trait. Similar results were reported by Srivastava et al (1978), Limproongratna and Maneephong (1979), Tukamuhabwa et al (2002), Agrawal et al (2005), Gavioli et al (2006) and Sher et al (2012). GCA/SCA ratio close to zero suggested that non-additive gene effects played a bigger role than additive gene effects.…”

Section: Agronomic Traitssupporting

confidence: 85%

“…Parental genotypes were generally taller (33.3 cm) compared to their F1 progenies (31.2 cm). These findings were in agreement with Sharma (2004); Wanderi (2012); Karyawati et al (2015) but were not in agreement with Gavioli et al (2006) who found progenies to be more taller than parents. Genes that control the plant height in parents could be recessive.…”

Section: Agronomic Traitssupporting

confidence: 82%

“…In contrast, Wanderi (2012) found that only the additive gene effects were important in the inheritance of the trait. Rahangdale and Raut (2002) and Gavioli et al (2006) also noted the preponderance of additive over dominance gene effects. Ludlow and Muchow (1990) reported that varieties with short term maturation compared to long term maturation ensure better and stable yields under a range of environments through avoidance of drought or low water available.…”

Section: Agronomic Traitsmentioning

confidence: 94%

“…Significant GCA and SCA effects (P<0.01) suggested that both additive and non-additive gene action controlled the inheritance of the trait. Sharma (2004), Agrawal et al (2005), Gavioli et al (2006) and Wanderi (2012) also reported that both additive and dominance effects played an important role in determination of plant height. GCA/SCA ratio which was close to zero indicated that nonadditive gene action was more important than additive gene action.…”

Section: Agronomic Traitsmentioning

confidence: 98%

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2019

IJAPR

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Eight parents Nyala and SB-8, SB-25, SB-93, SB-19, 915/5/12, 835/5/30 and SB-98 were crossed in a diallel mating scheme to generate 28 F1 progenies in a greenhouse at Kabete, University of Nairobi. The F1 and their parents were evaluated at KALRO-Embu and Mwea Research Centers between December 2016 and May 2017. The trials were laid out in an alpha-lattice design arranged in a 6 × 6 pattern with 3 replicates. Data was collected on maturity, plant height, grain yield and pod shattering. General and specific combining ability were determined according to Griffing's diallel, Method 2. General and specific combining ability (GCA and SCA) were significant (P<0.05) for all the traits indicating that additive and non-additive gene action were important in the inheritance of pod shattering and other traits. GCA/SCA ratio varied from 0.00124 to 0.0742. Although the ratio was higher for pod shattering (0.0742) compared to other traits (less than 0.0132), the ratio in general was close to zero. This indicated that non-additive gene action played a more important role over additive gene action in the inheritance of these traits. Parents SB-93, SB-19, SB-98, 835/5/30 and Nyala, were the best combiners for early maturity. SB-19, 915/5/12, Nyala, SB-93 and SB-98 significantly contributed towards reduced plant height. Parent 835/5/30 followed by SB-8 had the higher GCA gene action thus were the best combiners for high grain yield. Parents SB-8 and Nyala had the highest negative and significant GCA effects for pod shattering indicating that these lines had favorable gene frequencies of resistance to pod shattering. Progenies of SB-25 x SB-8 were the best combiners for pod shattering resistance across environments. This study found non-additive gene action to be more important over additive and suggested that heterosis breeding and selection of late segregating generations would be effective to improve pod shattering resistance ability and other agronomic traits in soybeans.

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Section: Agronomic Traitssupporting

confidence: 85%

Section: Agronomic Traitssupporting

confidence: 82%

Section: Agronomic Traitsmentioning

confidence: 94%

Section: Agronomic Traitsmentioning

confidence: 98%

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2019

IJAPR

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“…The relative importance of general and specific combining ability on progeny performance was estimated based on the Baker's Ratio (1978) and it showed a preponderance of additive gene effects in the inheritance of all traits except grain yield and root lodging. Thus, the response of hybrids to these agronomic traits could be predicted based on the GCA of the parents (Gavioli et al, 2006). Thus, the additive effects could be exploited in the introgression of the yield related traits leading to enhance gains from selection (Sese et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Genetic Variability and Correlation Studies of Grain Yield and Related Agronomic Traits in Maize

Nzuve¹,

Githiri²,

Mukunya³

et al. 2014

JAS

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A total of fourty two maize hybrids produced through a full diallel mating design and seven parental inbred lines were evaluated in three sites located at different agro-ecological zones in Kenya to determine the genetic parameters governing the inheritance of grain yield and related agronomical traits. The genetic parameters studied among the traits included the mean performance, genotypic variances, phenotypic variances, genotype by environment variances, broad sense heritability and phenotypic and genotypic correlation coefficients. Significant differences were recorded for all traits studied thereby revealing the diversity of the maize genotypes. The grain yield and days to maturity which showed high heritability had low genotypic variances suggesting the involvement of non-additive gene action which could be utilized through heterosis breeding. Ear height and plant height showed the highest heritability and high genotypic variances suggesting the preponderance of additive gene action. Grain yield was positively and strongly correlated with ear height and plant height. The tall plants with high ear placement gave better yields and this could be attributed to the high dry matter accumulation function carried out by the high number of leaves possessed. The positive relationships observed in this study imply that the desirable traits in these hybrids could be exploited in further breeding activities for the development of composites and synthetics for the resource constrained maize farmers who cannot access hybrid seeds every year.

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Combining ability for the improvement of vegetable soybean

Souza¹,

Barbosa²,

Yassue³

et al. 2020

Agronomy Journal

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One use of soybean [Glycine max (L.) Merr.] as food is as a vegetable, also known as edamame, in which the green pods with seeds fully developed are harvested, cooked briefly, and consumed. Few efforts have been devoted to developing new soybean cultivars with high agronomic performance and characteristics suitable for human consumption. In the present research, crosses between six soybean lines were performed in a diallel scheme without reciprocals to determine the combining ability and the type of gene action that controls the inheritance of development and yield component traits for edamame production. The results showed the existence of variability among the evaluated genotypes and indicated that the progenies presented superior performance in comparison to the parental lines for important traits. The cultivar BRS267 and the inbred line USP-13-19-007 had consistently high estimates of general combining ability for pod and seed size, indicating their potential as parents in breeding for edamame. Most progenies had positive specific combining ability for pod and seed size, showing that generating novel genotypic combinations through new crossings is a promising strategy for improvement. Additive effects played a major role in the inheritance for maturity traits and for pod size, seed size, and yield; both additive and nonadditive effects were important. The magnitude and significance of the correlations indicated that it is possible to improve vegetable soybean traits without affecting grain yield.

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Analysis of combining ability in soybean cultivars

Cited by 8 publications

References 5 publications

Untitled

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Genetic Variability and Correlation Studies of Grain Yield and Related Agronomic Traits in Maize

Combining ability for the improvement of vegetable soybean

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