Genetic diversity study in germplasm lines of sesamum (<i>Sesamum indicum</i> L.)

Arpitha, G. D.; Manonmani, S.; Viswanathan, P. L.; Raveendran, M.

doi:10.5958/0975-928x.2019.00102.9

Cited by 2 publications

(2 citation statements)

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“…The genotype distribution into different clusters was presented in Table 1. A similar kind of analysis was done in Sesamum by Sirisha et al (2020), Arpitha et al (2019) and Tanwar and Bisen (2018). As per the diversity analysis, with 20 genotypes, cluster II was the largest, followed by cluster I with 16 genotypes and cluster VI with seven genotypes, cluster VIII with two and remaining all clusters viz., III, IV, V, VII and IX comprising of one genotype each.…”

Section: Resultsmentioning

confidence: 90%

Analysis of genetic diversity in sesame (Sesamum indicum L.) germplasm for yield and its attributing traits

2022

EJPB

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The genetic diversity of 50 sesame genotypes was studied by Mahalanobis D 2 statistics. By using Tocher's method, genotypes were grouped into nine clusters based on 10 economically important traits viz., days to flowering, days to 50% flowering, days to maturity, plant height, the number of primary branches, the number of secondary branches, the number of capsules per plant, the number of seeds per capsules, thousand seed weight and single plant yield. The largest intercluster distance among the nine clusters was found between clusters I and VIII, indicated that they were significantly more diverse and clusters IV and VI showed the lowest intercluster distance indicating that the genotypes under these clusters are closely related. The cluster with the highest cluster mean was found in cluster VIII for the number of capsules per plant, the number of primary and secondary branches, the number of seeds per capsule and single plant yield and cluster V for plant height and cluster VII for thousand seed weight. Taking into account the highest cluster mean for a trait, genotypes could be selected as parents in the hybridization program to create superior cross combinations.

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Section: Resultsmentioning

confidence: 90%

Analysis of genetic diversity in sesame (Sesamum indicum L.) germplasm for yield and its attributing traits

2022

EJPB

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“…Biotic and abiotic stresses are the major determinants that curb the yield potential of Sesame (Arpitha et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

An insight into the reproductive success in an interspecific cross of sesamum

Sruthi¹,

Kalaiyarasi²,

Sasikala³

et al. 2021

EJPB

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The study deals with pollen morphology, pollen fertility assessment and pollen pistil interaction in two species of Sesame viz., Sesamum indicum (CO 1) and Sesamum alatum. The wild species are the potential source for biotic and abiotic stress-resistant genes and therefore high crossability with the cultivated variety is very essential for the transfer of genes through a conventional breeding programme. The pollen images obtained and the number of colpi counted from Light Microscope and Scanning Electron Microscope assisted in differentiating the pollen of Sesamum indicum from Sesamum alatum. The pollen fertility assessment by Acetocarmine test proved that Sesamum indicum (CO 1) was more fertile than Sesamum alatum and hence the former was presumed to be the better pollen-producing parent in terms of fertility. The pollen pistil interaction by aniline blue technique between direct and reciprocal crosses of two species of Sesamum reported higher and lower germination per cent at 2 HAP and 8 HAP, respectively. The mean pollen germination per cent of the direct and reciprocal cross was observed to be 69.99 and 58.59, respectively. In the direct cross, the pollen tube managed to reach the ovary but did not set seeds and hence is claimed to possess a post-zygotic fertilization barrier. In the reciprocal cross, the growth of the pollen tube stopped before reaching the ovary apparently, no seed set was observed and therefore designated to have pre zygotic fertilization barriers. Direct and reciprocal crosses were compared and ways to mitigate fertilization barriers are discussed.

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Genetic diversity study in germplasm lines of sesamum (Sesamum indicum L.)

Cited by 2 publications

References 4 publications

Analysis of genetic diversity in sesame (Sesamum indicum L.) germplasm for yield and its attributing traits

Analysis of genetic diversity in sesame (Sesamum indicum L.) germplasm for yield and its attributing traits

An insight into the reproductive success in an interspecific cross of sesamum

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