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Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics

High temperature tolerance is an important component of adaptation to arid and semiarid cropping environment in chili pepper. Two experiments were carried out to study the genetic variability among chili pepper for heat tolerance and morphophysiological traits and to estimate heritability and geneti...

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Main Authors: Usman, Magaji G., Yusop, Mohd Rafii, Ismail, Mohd Razi, Abdul Malek, Mohammad, Abdul Latif, Mohammad
Format: Article
Language:English
Published: Hindawi Publishing Corporation 2014
Online Access:http://psasir.upm.edu.my/id/eprint/37850/1/37850.pdf
http://psasir.upm.edu.my/id/eprint/37850/
http://www.hindawi.com/journals/tswj/2014/308042/abs/
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spelling my.upm.eprints.378502016-04-21T02:02:56Z http://psasir.upm.edu.my/id/eprint/37850/ Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics Usman, Magaji G. Yusop, Mohd Rafii Ismail, Mohd Razi Abdul Malek, Mohammad Abdul Latif, Mohammad High temperature tolerance is an important component of adaptation to arid and semiarid cropping environment in chili pepper. Two experiments were carried out to study the genetic variability among chili pepper for heat tolerance and morphophysiological traits and to estimate heritability and genetic advance expected from selection. There was a highly significant variation among the genotypes in response to high temperature (CMT), photosynthesis rate, plant height, disease incidence, fruit length, fruit weight, number of fruits, and yield per plant. At 5% selection intensity, high genetic advance as percent of the mean (>20%) was observed for CMT, photosynthesis rate, fruit length, fruit weight, number of fruits, and yield per plant. Similarly, high heritability (>60%) was also observed indicating the substantial effect of additive gene more than the environmental effect. Yield per plant showed strong to moderately positive correlations (r = 0.23–0.56) at phenotypic level while at genotypic level correlation coefficient ranged from 0.16 to 0.72 for CMT, plant height, fruit length, and number of fruits. Cluster analysis revealed eight groups and Group VIII recorded the highest CMT and yield. Group IV recorded 13 genotypes while Groups II, VII, and VIII recorded one each. The results showed that the availability of genetic variance could be useful for exploitation through selection for further breeding purposes. Hindawi Publishing Corporation 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37850/1/37850.pdf Usman, Magaji G. and Yusop, Mohd Rafii and Ismail, Mohd Razi and Abdul Malek, Mohammad and Abdul Latif, Mohammad (2014) Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics. The Scientific World Journal, 2014. art. no. 308042. pp. 1-14. ISSN 2356-6140; ESSN: 1537-744X http://www.hindawi.com/journals/tswj/2014/308042/abs/ 10.1155/2014/308042
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description High temperature tolerance is an important component of adaptation to arid and semiarid cropping environment in chili pepper. Two experiments were carried out to study the genetic variability among chili pepper for heat tolerance and morphophysiological traits and to estimate heritability and genetic advance expected from selection. There was a highly significant variation among the genotypes in response to high temperature (CMT), photosynthesis rate, plant height, disease incidence, fruit length, fruit weight, number of fruits, and yield per plant. At 5% selection intensity, high genetic advance as percent of the mean (>20%) was observed for CMT, photosynthesis rate, fruit length, fruit weight, number of fruits, and yield per plant. Similarly, high heritability (>60%) was also observed indicating the substantial effect of additive gene more than the environmental effect. Yield per plant showed strong to moderately positive correlations (r = 0.23–0.56) at phenotypic level while at genotypic level correlation coefficient ranged from 0.16 to 0.72 for CMT, plant height, fruit length, and number of fruits. Cluster analysis revealed eight groups and Group VIII recorded the highest CMT and yield. Group IV recorded 13 genotypes while Groups II, VII, and VIII recorded one each. The results showed that the availability of genetic variance could be useful for exploitation through selection for further breeding purposes.
format Article
author Usman, Magaji G.
Yusop, Mohd Rafii
Ismail, Mohd Razi
Abdul Malek, Mohammad
Abdul Latif, Mohammad
spellingShingle Usman, Magaji G.
Yusop, Mohd Rafii
Ismail, Mohd Razi
Abdul Malek, Mohammad
Abdul Latif, Mohammad
Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics
author_facet Usman, Magaji G.
Yusop, Mohd Rafii
Ismail, Mohd Razi
Abdul Malek, Mohammad
Abdul Latif, Mohammad
author_sort Usman, Magaji G.
title Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics
title_short Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics
title_full Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics
title_fullStr Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics
title_full_unstemmed Heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics
title_sort heritability and genetic advance among chili pepper genotypes for heat tolerance and morphophysiological characteristics
publisher Hindawi Publishing Corporation
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/37850/1/37850.pdf
http://psasir.upm.edu.my/id/eprint/37850/
http://www.hindawi.com/journals/tswj/2014/308042/abs/
_version_ 1643832078860550144
score 13.211869

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