Exploitation of heterosis for yield and yield related traits in okra (Abelmoschus esculentus (L.) Moench)

Rynjah, S; Arumugam, T.; Mohankumar, S.; A, Kamala Kannan

doi:10.22271/chemi.2020.v8.i4f.9715

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…Ten out of the 12 crosses showed signifcant positive MP heterosis and 10 crosses for BP heterosis. Similar magnitude of heterosis was also reported by [13,[33][34][35][36][37][38][39].Te best crosses, which were classifed on the basis of heterosis parameters, showed that two out of the 12 studied crosses were derived from P 4 (Line 4.1.18) as male or female parent that was classifed as a good performance for plant height, no. of pods/plant, average weight of pod, total fresh pods, weight of small pods/plot, pods length, pods diameter, and weight of medium pods.…”

Section: Discussionsupporting

confidence: 81%

Genetic Components Derived Parameters and Heterosis in Okra under Saudi Arabia Conditions

Abdelkader,

Mahmoud,

Diyasty

et al. 2024

Genetics Research

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Four parental genotypes of okra were crossed in complete diallel design to study the direction and extent of relative heterosis and heterobeltiosis for yield and its associated traits for utilization of existing genetic diversity to develop heterotic F1 hybrids in okra. The additive genetic component (D) was significant in all studied traits except average pod weight. Nonadditive (H1 and H2) components were found to be significant in all studied traits. However, the values of the dominant effect (H1) were smaller than the D components for no. of nodes/plant, no. of pods/plant, weight of medium pods, weight of large pods, and total fresh pod yield. The maximum significant MP heterosis in the desirable direction (149.9%) was recorded for the weight of large pods/plot. The maximum significant heterobeltiosis in the desirable direction (120.1%) was recorded for the weight of small pods/plot followed by total fresh pod yield (107.4%), the weight of large pods/plot (104.9%), weight of medium pods/plot (92.1%), average pod weight (51.8%), number of pods/plant (38.4%), and plant height (34.3%). It could be concluded that plant height, average pod weight, and the number of branches could be considered for the development of elite hybrids (heterosis breeding) or inbred lines (pure line selection) in succeeding generations. Therefore, these parameters can be considered for selecting genotypes to improve the pod yield of okra. The superior crosses identified through heterosis analysis were Egyptian Balady × Line 4.1.18 (30.8 ton/ha), Line 4.1.18 × Egyptian Balady (29.8 ton/ha), Dwarf Green Long Pod × Line 4.1.18 (28.3 ton/ha), and Egyptian Balady × Dwarf Green Long Pod (27.6 ton/ha) as these crosses had high performance as well as significant and higher estimates of heterobeltiosis for fruit yield per plant and yield attributing other characters.

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Section: Discussionsupporting

confidence: 81%

Genetic Components Derived Parameters and Heterosis in Okra under Saudi Arabia Conditions

Abdelkader,

Mahmoud,

Diyasty

et al. 2024

Genetics Research

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Exploitation of combining ability and heterosis potential for improvement in okra (Abelmoschus esculentus) genotypes

Yadav

Dhankhar

Singh³

et al. 2023

Indian J Agri Sci

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The present investigation was undertaken with the objective to carry out combining ability and heterosis for 13fruit yield and its attributing traits in 14 parents and their 24 crosses in okra (Abelmoschus esculentus (L.) Moench)at vegetable research farm, CCS Haryana Agricultural University, Hisar, Haryana during spring-summer season2019–20 and rainy (kharif) season 2020–21. Four crosses, viz. HB-20-3-4 × Hisar Naveen (HN), Hisar Mutant (HM)-1× Hisar Unnat (HU), HBMS-1 × Hisar Unnat (HU) and HB-76-2-4 × Hisar Naveen (HN) showed highly significantpositive economic heterosis for yield and its contributing traits.Parents HB-20-3-4 and HM-1 were found to be thebest general combiner for most of the economic traits. While, cross HB-60-1 × HN followed by HBMS-1 × HU, HB-20-3-4 × HN, HM-1 × HU and HB-96-2 × HU demonstrated strong SCA effects for yield and its attributes. The ratio of general combining ability (σ2GCA) and specific combining ability variances (σ2SCA) was less than one for all the quantitative traits indicating the non-additive gene effects predominated in determining the expression of allthese characters and demonstrates variability in genotypes, which provide ample scope for improvement of yield and its contributing traits in okra. Line HB-60-1 when crossed with Hisar Naveen, and HBMS-1 with Hisar Unnat gavesuperior hybrids as compared to other crosses. Hence, these parents can be exploited for further genetic improvement programmes and isolation of desirable segregants in okra.

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Exploitation of heterosis for yield and yield related traits in okra (Abelmoschus esculentus (L.) Moench)

Cited by 2 publications

References 3 publications

Genetic Components Derived Parameters and Heterosis in Okra under Saudi Arabia Conditions

Genetic Components Derived Parameters and Heterosis in Okra under Saudi Arabia Conditions

Exploitation of combining ability and heterosis potential for improvement in okra (Abelmoschus esculentus) genotypes

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