Heritability and predicted gain from selection in components of crop duration and seed yield in sesame (&lt;i&gt;Sesamum indicum &lt;/i&gt;L.)

Monpara, B. A.; Khairnar, Shrikant Sanjayrao

doi:10.5376/pgt.2016.07.0002

Cited by 6 publications

(7 citation statements)

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“…The number of capsules had the highest heritability (0.79) among the studied traits. Similar to our results, a moderate to high heritability was reported for yield components in previous studies on sesame (Monpara and Khairnar 2016;Dossa et al 2019). Yield components with high heritability have a better response to selection and are easier to improve (Rauf et al 2016).…”

Section: Anova Heritability and Means Comparisons Of Morphological Tr...supporting

confidence: 92%

“…A significant correlation was observed between capsule diameter and the number of capsules (p<0.01). Consistent with our results, Monpara and Khairnar (2016) showed that seed yield had a highly significant positive correlation with the number of capsules per plant under normal water conditions. On the other hand, yield per plant was significantly correlated with plant height, the number of capsules, capsule diameter (p<0.01), and number of seeds per capsule (p<0.05) under drought stress.…”

Section: Correlation Analysissupporting

confidence: 92%

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Assessment of agro-morphological traits and yield-based tolerance indices in sesame (Sesamum indicum L.) genotypes under drought stress

Baghery

Kazemitabar

Dehestani

et al. 2022

IJGPB

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Sesame (Sesamum indicum L.) is one of the most important oilseed crops of the world, particularly tropical areas. Its production issignificantly affected by drought stress. The present study was performed to assess the efficiency of existing criteria for the selectionof tolerant cultivars while evaluating sesame genotypes under drought conditions. Various agro-morphological traits along with somedrought tolerance indices were used to evaluate 15 sesame genotypes under drought conditions. A moderate to high heritability wasestimated for plant height (0.55), no. of capsules (0.72), capsule diameter (0.60), no. of seeds per capsule (0.43) and seed yield (0.53).On average, the seed yield of genotypes was reduced by 45% under water stress. Seed yield was significantly positively correlatedwith the no. of capsules, capsule diameter, and no. of seeds per capsule under both normal and drought conditions. The number ofcapsules and capsule diameter were suggested as potential criteria for indirect yield selection under drought stress. Chinese (G01), Naz Chand Shakhe (G05), and Darab1 (G04) genotypes were identified as the most tolerant based on the average ranking of indices. Stress/non-stress production index (SNPI), yield index (YI), and drought resistance index (DI) were suggested as the most efficient drought tolerance indices according to principal component analysis and correlations. The evaluation criteria proposed in this study can be used for efficient selection of drought-tolerant genotypes in sesame. Moreover, reported tolerant and sensitive genotypes can be used in future studies and breeding programs in sesame under drought stress.

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Section: Anova Heritability and Means Comparisons Of Morphological Tr...supporting

confidence: 92%

Section: Correlation Analysissupporting

confidence: 92%

Assessment of agro-morphological traits and yield-based tolerance indices in sesame (Sesamum indicum L.) genotypes under drought stress

Baghery

Kazemitabar

Dehestani

et al. 2022

IJGPB

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“…Several authors have studied traits that contribute to the seed yield formation in sesame. Distinctly, the capsule number per plant is a primary determinant for high seed yield in sesame [ 7 , 9 , 10 , 25 , 26 ]. In fact, sesame seeds grow in a capsule; therefore, more capsules on the plant are likely to yield more seeds [ 4 ].…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Association Studies of 39 Seed Yield-Related Traits in Sesame (Sesamum indicum L.)

Zhou

Dossa

et al. 2018

IJMS

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Sesame is poised to become a major oilseed crop owing to its high oil quality and adaptation to various ecological areas. However, the seed yield of sesame is very low and the underlying genetic basis is still elusive. Here, we performed genome-wide association studies of 39 seed yield-related traits categorized into five major trait groups, in three different environments, using 705 diverse lines. Extensive variation was observed for the traits with capsule size, capsule number and seed size-related traits, found to be highly correlated with seed yield indexes. In total, 646 loci were significantly associated with the 39 traits (p < 10−7) and resolved to 547 quantitative trait loci QTLs. We identified six multi-environment QTLs and 76 pleiotropic QTLs associated with two to five different traits. By analyzing the candidate genes for the assayed traits, we retrieved 48 potential genes containing significant functional loci. Several homologs of these candidate genes in Arabidopsis are described to be involved in seed or biomass formation. However, we also identified novel candidate genes, such as SiLPT3 and SiACS8, which may control capsule length and capsule number traits. Altogether, we provided the highly-anticipated basis for research on genetics and functional genomics towards seed yield improvement in sesame.

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“…In addition, several authors have reported traits that contributed to the seed yield formation in sesame with similar results. For instance, these studies speculated that capsule number per plant is a primary determinant for high seed yield in sesame (Monpara & Khairnar, 2016;Shim et al, 2016;Wu et al, 2014;Zhou et al, 2018). The GWAS approach is recognized as a powerful tool to reconnect traits back to the underlying genetic basis and offers higher resolution than classical bi-parental linkage mapping (Korte & Ashley, 2013).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Genome‐wide association study for yield‐related traits in sesame (Sesamum Indicum)

Tesfaye

Keneni

et al. 2022

Plant Breeding

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Sesame is an important oil crop in Ethiopia and other regions in terms of both area coverage and production. However, productivity is low due to biotic and abiotic stresses. Therefore, dissecting the genetic basis of quantitatively inherited yield‐related traits is instrumental to developing stable and high‐yielding varieties. A genome‐wide association study (GWAS) was performed with a diverse set of 300 sesame accessions tested in two environments and 2997 SNP markers. In total, 21 significant marker–trait associations (MTAs) were detected for seven yield‐related traits, including days to flower initiation (DFI), days to 50% flowering (DF), days to physiological maturity (DM), capsule length (CAPL), seeds per capsule (SPC), 1000‐seed weight (TSW) and bacterial blight (BBL). The majority of MTAs detected on LG 3, 7 and 8 were associated with traits related to physiological periods. Dissecting genetic control of flowering time and maturity has a pivotal contribution to fostering sesame breeding and developing new varieties adaptable to changing climatic conditions. Our GWAS results will assist in incorporating alleles into the elite sesame germplasm through marker‐assisted selection.

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Heritability and predicted gain from selection in components of crop duration and seed yield in sesame (<i>Sesamum indicum </i>L.)

Cited by 6 publications

References 0 publications

Assessment of agro-morphological traits and yield-based tolerance indices in sesame (Sesamum indicum L.) genotypes under drought stress

Assessment of agro-morphological traits and yield-based tolerance indices in sesame (Sesamum indicum L.) genotypes under drought stress

Genome-Wide Association Studies of 39 Seed Yield-Related Traits in Sesame (Sesamum indicum L.)

Genome‐wide association study for yield‐related traits in sesame (Sesamum Indicum)

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