Theoretical aspects of heterosis

Хотылева, Л. В.; Kilchevsky, A. V.; Шаптуренко, М. Н.

doi:10.1134/s2079059717040049

Cited by 7 publications

(3 citation statements)

References 70 publications

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“…The high magnitude of heterosis for various hybrids such as H8, H4 and H5 may be an evidence of overdominance type of gene action for tocopherol and sterol contents. Heterosis has been shown to result by interallelic interactions causing an overdominance type of gene action (Khotyleva et al 2017). Combining ability analyses was done to select positive combiners for tocopherol and sterol contents.…”

Section: Discussionmentioning

confidence: 99%

Genotype by environment interaction influence on functional molecules (tocopherols and sterols) accumulation in sunflower oil

Hussain,

Rauf,

Ortiz

et al. 2023

Preprint

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Tocopherol and sterol are non-dietary functional molecules in sunflower oil, which act as antioxidants, reduce cholesterol and improve immunity against diseases. The present study was designed to determine tocopherol and sterol contents in 13 high and two low oleic acid sunflower hybrids across two seasons (spring and autumn) and four locations under subtropical conditions of Pakistan with contrasting reproductive phase temperatures. The results showed that tocopherol and sterol contents varied across the seasons and locations. Autumn planting produced high tocopherol content. Moreover, locations under high temperature during reproductive phase negatively affected the sterol and tocopherol contents. High oleic acid hybrids yielded 38% higher tocopherol content than low oleic acid hybrids. High oleic acid hybrids produced higher sterol contents at all locations and seasons. Hybrids such as H4 and H5 are considered stable due to comparatively close values of tocopherol and sterol contents across the four locations when compared with standard checks and other hybrids during spring season as indicated from various stability parameters. Hybrids H8, H4 and H5 also manifested higher magnitude of heterosis for tocopherol and sterol contents that may be due to overdominance gene action. Breeding lines such as B.116.P, B.112.P and RH.365 were positive combiners for the investigated traits, thus likely carrying positive alleles for both tocopherol and sterol traits.

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Section: Discussionmentioning

confidence: 99%

Genotype by environment interaction influence on functional molecules (tocopherols and sterols) accumulation in sunflower oil

Hussain,

Rauf,

Ortiz

et al. 2023

Preprint

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“…Goodnight (1999) analyzed the role of epistasis in the manifestation of heterosis and showed that under additive-dominant and dominant-dominant epistasis the manifestation of heterosis in a separate locus change, that is, intraloci heterosis is a function of the genetic background. Consequently, the genetic background and interactions there can influence the effects of individual loci, including the formation of a heterotic response (Khotyleva et al, 2017). Cotton improvement programmes that concentrate on the development of hybrids through the utilization of heterosis have contributed to the improvement of cotton productivity in India and China (Xing et al, 2007;Bilwal et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Study of heterosis for agronomic, yield and fiber quality traits in cotton under the irrigated condition of Middle Awash, Ethiopia

Gurmessa,

Balcha,

Gudeta

et al. 2023

IJAAS

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The present investigation was undertaken to study the extent of heterosis in respect of seed cotton and lint yield, fiber quality traits and other agronomic performances. Six cotton genotypes were crossed in all possible combinations including reciprocals. The resulting filial generation (F1 hybrids) seed of 30 crosses and 6 parents were planted in a simple lattice design with a perfect square of 6x6 replicated twice. Mean square due to genotypic differences were found significant for all the traits under study except for boll number per plant indicating the availability of substantial genetic diversity for different traits in the experimental materials. Among the hybrids intra specific G. hirsutum L. hybrid, HS-46 x Stonoville 453 19-8 X Stam 59A x Cucurova 1518 30-2 (B-1) exhibited considerable heterotic values for seed cotton and lint yield, and fiber length possibly suitable for local cottage and textile industries. The obtained results indicated the possibility of improving yield and fiber quality traits simultaneously using interspecific hybrids. Moreover, research on cotton breeding needs to address all possibilities including the exploitation of hybrid vigour to increase yield and fiber qualities of cotton production in Ethiopia.

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“…Heterosis has been one of the most studied phenomena since genetic studies were conceived (Khotyleva, Kilchevsky, & Shapturenko, 2017). The subject has been addressed in publications for more than 100 years, and early studies (East & Hayes, 1912;East, 1936;Shull, 1908) provided the basis for the creation of hybrids, not only in maize but also in other valuable crops.…”

Section: Introductionmentioning

confidence: 99%

Heterosis for the root distribution trait in common bean

et al. 2020

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Heterosis has been one of the most studied phenomena since genetic studies were conceived. Knowledge of this phenomenon for the root distribution trait in beans (Phaseolus vulgaris L.) can favour the development of genotypes that are more tolerant to abiotic stresses. This study aimed to verify the occurrence of heterosis for the root distribution trait in hybrid F1 populations of common bean derived from crosses within and between gene groups. Thirty-six populations (six parents and 30 hybrids) were evaluated under field conditions in the agricultural years 2016/17 and 2017/18. The root distribution was assessed with the adapted Bohm method. The genotypes responded similarly to environmental changes (absence of an interaction). However, the root distribution differed significantly between the agricultural years. Comparisons between the mean of hybrids from crosses within each gene pool and the mean of parents did not reveal heterosis. The comparisons between gene groups showed significant differences only between BRS Embaixador x IPR Uirapuru, CBS 14 x IPR Uirapuru, and BAF 53 x IPR Uirapuru and the mean of parents. The absence of heterosis in the root trait can be explained by the degree of kinship between the gene groups, as well as some epistatic interactions.

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Theoretical aspects of heterosis

Cited by 7 publications

References 70 publications

Genotype by environment interaction influence on functional molecules (tocopherols and sterols) accumulation in sunflower oil

Genotype by environment interaction influence on functional molecules (tocopherols and sterols) accumulation in sunflower oil

Study of heterosis for agronomic, yield and fiber quality traits in cotton under the irrigated condition of Middle Awash, Ethiopia

Heterosis for the root distribution trait in common bean

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