Genetic Variability, Heritability and Cluster Analysis in Some Accessions of Pepper (Capsicum Spp)

Ishaya, E. B.; Gana, A. S.; Ayeleke, D. A.; Obogun, O. O.; Akinyele, M. O.; Idowu, Gideon Aina

doi:10.31871/wjir.8.2.15

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Therefore, correlation and path analyses can benefit trait selection. Estimating the genetic variability and determining the nature of the relationship among the variables is a significant step toward genotype selection and improvement programs (Ishaya et al, 2020). The correlation analysis revealed that choosing almost all traits for use as selection criteria.…”

Section: Discussionmentioning

confidence: 99%

Genetic Characteristics of F2 Populations Obtained Through Double and Three-Way Crosses in Cayenne Peppers

AMAS¹,

MUSA²,

FARID³

et al. 2023

SABRAOJBG

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The enhancement in cayenne pepper (Capsicum frutescens L.) productivity is intently needed due to the ever-increasing demand, considered a vital vegetable commodity with complete nutrition and high economic value in Indonesia. Conventional plant breeding is one of the strategies to produce superior cultivars with increased yield. Thus, the latest research aimed to identify genetic diversity and gene inheritance patterns for selecting high-yielding F2 populations of cayenne pepper made through double and three-way crosses. The said research employed an augmented design combined with a randomized complete block design as an environmental design. The research factors consisted of non-repeating cayenne pepper (Capsicum frutescens L.) lines with a limited number of seeds originating from 10 parental populations. The resulting 100 and 52 F22 individual populations, obtained from double and three-way crosses, respectively, were evaluated in comparison with four control cultivars, i.e., Bara, Dewata, Ungara, and Katokkon. The non-repeated rows, divided into five blocks, included the control cultivars planted repeatedly in each block. The results indicated that almost all traits have high genetic diversity and heritability and have potential use as selection criteria. The traits plant habitus (0.135), stem diameter (0.202), number of productive branches (0.359), and fruit weight (0.171) have a direct utmost influence on yield compared with other traits; thus, these promising traits can serve as selection criteria along with yield.

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Section: Discussionmentioning

confidence: 99%

Genetic Characteristics of F2 Populations Obtained Through Double and Three-Way Crosses in Cayenne Peppers

AMAS¹,

MUSA²,

FARID³

et al. 2023

SABRAOJBG

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“…Rani (2020) also had similar study that reported highest GCV and PCV for chlorophyll b among the other studied traits. High values of GCV and PCV were an indication of high genetic variability among the developed BC 2 F 1 populations thus there is scope for improvement of these characters through simple selection (Ishaya et al 2020). However, in backcross populations the lowest GCV values were depicted by plant spread, number of primary branches and fruit length.…”

Section: Genotypic and Phenotypic Coe Cient Of Variancesmentioning

confidence: 99%

Genetic diversity and recurrent parent phenome recovery assessment in six distinct populations with introgression of LCVD resistant gene from hot pepper to heat tolerant bell pepper

Jindal,

Sharma

et al. 2024

Preprint

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The development of resistant cultivars through backcross breeding is the most practical and efficient way to combat the disease. Resistance breeding for Capsicum species started in India in the late 1960s, however the majority of the screening work was done in open fields. Using marker-assisted, strict phenotypic selection and backcross breeding, we attempted, for the first time, to transfer the LCVD (Leaf Curl Virus Disease) resistant gene from the donor hot pepper parent S-343, a strong LCVD resistant line in India, into the genetic background of six heat-tolerant bell pepper inbreds, in limited generations, in order to develop new LCVD resistant lines in bell pepper. In current research it was observed that the recurring parent phenome (RPP) recovery is above 80% in all of the developed BC2F1 populations for all the studied attributes except for some characters such as fruit width (63.33%), number of fruits plant− 1 (76.32%) & 1000 seed dry weight (78.62%) in LCVRS3SM-8, and for capsaicin content (75%, in each) in LCVRS3SM-17 and LCVRS3SM-58. Likewise, paired t-test analysis also dictates that there was no significance difference among the BC2F1 populations and their respective recurrent parents for most of the attributes. The genetic diversity analysis revealed the supporting evidence for the effectiveness of stringent phenotypic selection for RPP recovery for most of the studied attributes as these traits exhibited high heritability coupled with high values of GCV and PCV along with high estimates of genetic advance and high genetic gain which suggests that these attributes were strongly influenced by additive gene action. LCVD resistant lines produced by this experiment will be used in future resistance breeding programmes for bell peppers.

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Genetic variability for plant growth, fruit, seed and biochemical traits in bell pepper breeding populations under North Indian plains

2023

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The present research aimed to estimate the plant growth, fruit yield, seed and biochemical traits among the seven pepper parental lines and their six BC2F1 populations in order to generate information regarding the extent of genetic variability, heritability and genetic advance. The study was conducted using a randomized complete block design (RCBD) with three replications at the Vegetable Research Farm of Punjab Agricultural University, Ludhiana, India. The analysis of variance (ANOVA) showed significant mean squares due to parents and BC2F1 populations for almost all the studied traits, it indicating the presence of a sufficient amount of inherent variability among the parental line and developed populations which could be exploited via selection. The plant height, fruit weight, fruit width, number of lobes fruit-1, chlorophyll b, total chlorophyll, chlorophyll a and total fruit yield plant-1 were recorded high GCV and PCV among the parental lines and developed populations BC2F1, indicating higher extent of variability for these traits in the evaluated genotypes. The results revealed that traits with high GCV and PCV offer a better scope for improvement through simple selection. High heritability and high estimates of genetic advance were determined for the traits viz., plant height, fruit weight, ascorbic acid content and total fruit yield plant-1, in both parents and populations. Based on these results, we can conclude that these traits are under the additive gene effects and that above mentioned characters could be considered as a good selection indices in bell pepper.

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Genetic Variability, Heritability and Cluster Analysis in Some Accessions of Pepper (Capsicum Spp)

Cited by 3 publications

References 4 publications

Genetic Characteristics of F2 Populations Obtained Through Double and Three-Way Crosses in Cayenne Peppers

Genetic Characteristics of F2 Populations Obtained Through Double and Three-Way Crosses in Cayenne Peppers

Genetic diversity and recurrent parent phenome recovery assessment in six distinct populations with introgression of LCVD resistant gene from hot pepper to heat tolerant bell pepper

Genetic variability for plant growth, fruit, seed and biochemical traits in bell pepper breeding populations under North Indian plains

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