Genetic Variation and Genotype by Environment Interaction for Heat Tolerance in Crisphead Lettuce
Lettuce (Lactuca sativa L.) is a cool season crop that is vulnerable to high temperature stress, which promotes bolting and decreases yield and quality. It is anticipated that climate change may lead to higher temperatures in current lettuce growing areas in the United States, thereby negatively aff...
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Format: | Article |
Language: | English |
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American Society for Horticultural Science (ASHS)
2020-12-01
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Series: | HortScience |
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Online Access: | https://journals.ashs.org/hortsci/view/journals/hortsci/56/2/article-p126.xml |
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author | Abbas Lafta Germán Sandoya Beiquan Mou |
author_facet | Abbas Lafta Germán Sandoya Beiquan Mou |
author_sort | Abbas Lafta |
collection | DOAJ |
description | Lettuce (Lactuca sativa L.) is a cool season crop that is vulnerable to high temperature stress, which promotes bolting and decreases yield and quality. It is anticipated that climate change may lead to higher temperatures in current lettuce growing areas in the United States, thereby negatively affecting lettuce production and possibly resulting in adverse impacts on global food production. Therefore, it is important to identify lettuce germplasm with tolerance to temperatures higher than those that have occurred over the past century. We evaluated 25 crisphead lettuce cultivars for tolerance to high temperature stress in the San Joaquin, Imperial, and Salinas Valleys, CA. Genetic variation was identified for yield and horticultural traits, such as core length, head diameter, tipburn, bolting, and market maturity, of crisphead lettuce grown in warmer conditions. Significant genotype × environment interaction did not account for most of the variation; the main differences were found for environments and only a small proportion of the variation was due to genotypes. Cultivar Primetime is a good source of heat tolerance for crisphead lettuce, as it presented the best yield and exhibited other desirable characteristics across warmer conditions. These results provide insight into the cultivars that respond well to hot environments. Moreover, the data can be used by breeders to develop new heat-tolerant lettuce cultivars. |
first_indexed | 2024-12-16T16:16:03Z |
format | Article |
id | doaj.art-e2c4881e480c46d19efeda617d0bbfe2 |
institution | Directory Open Access Journal |
issn | 2327-9834 |
language | English |
last_indexed | 2024-12-16T16:16:03Z |
publishDate | 2020-12-01 |
publisher | American Society for Horticultural Science (ASHS) |
record_format | Article |
series | HortScience |
spelling | doaj.art-e2c4881e480c46d19efeda617d0bbfe22022-12-21T22:25:06ZengAmerican Society for Horticultural Science (ASHS)HortScience2327-98342020-12-01562126135https://doi.org/10.21273/HORTSCI15209-20Genetic Variation and Genotype by Environment Interaction for Heat Tolerance in Crisphead LettuceAbbas LaftaGermán SandoyaBeiquan MouLettuce (Lactuca sativa L.) is a cool season crop that is vulnerable to high temperature stress, which promotes bolting and decreases yield and quality. It is anticipated that climate change may lead to higher temperatures in current lettuce growing areas in the United States, thereby negatively affecting lettuce production and possibly resulting in adverse impacts on global food production. Therefore, it is important to identify lettuce germplasm with tolerance to temperatures higher than those that have occurred over the past century. We evaluated 25 crisphead lettuce cultivars for tolerance to high temperature stress in the San Joaquin, Imperial, and Salinas Valleys, CA. Genetic variation was identified for yield and horticultural traits, such as core length, head diameter, tipburn, bolting, and market maturity, of crisphead lettuce grown in warmer conditions. Significant genotype × environment interaction did not account for most of the variation; the main differences were found for environments and only a small proportion of the variation was due to genotypes. Cultivar Primetime is a good source of heat tolerance for crisphead lettuce, as it presented the best yield and exhibited other desirable characteristics across warmer conditions. These results provide insight into the cultivars that respond well to hot environments. Moreover, the data can be used by breeders to develop new heat-tolerant lettuce cultivars.https://journals.ashs.org/hortsci/view/journals/hortsci/56/2/article-p126.xmlboltinggge biplotheat stresslactuca sativatipburn |
spellingShingle | Abbas Lafta Germán Sandoya Beiquan Mou Genetic Variation and Genotype by Environment Interaction for Heat Tolerance in Crisphead Lettuce HortScience bolting gge biplot heat stress lactuca sativa tipburn |
title | Genetic Variation and Genotype by Environment Interaction for Heat Tolerance in Crisphead Lettuce |
title_full | Genetic Variation and Genotype by Environment Interaction for Heat Tolerance in Crisphead Lettuce |
title_fullStr | Genetic Variation and Genotype by Environment Interaction for Heat Tolerance in Crisphead Lettuce |
title_full_unstemmed | Genetic Variation and Genotype by Environment Interaction for Heat Tolerance in Crisphead Lettuce |
title_short | Genetic Variation and Genotype by Environment Interaction for Heat Tolerance in Crisphead Lettuce |
title_sort | genetic variation and genotype by environment interaction for heat tolerance in crisphead lettuce |
topic | bolting gge biplot heat stress lactuca sativa tipburn |
url | https://journals.ashs.org/hortsci/view/journals/hortsci/56/2/article-p126.xml |
work_keys_str_mv | AT abbaslafta geneticvariationandgenotypebyenvironmentinteractionforheattoleranceincrispheadlettuce AT germansandoya geneticvariationandgenotypebyenvironmentinteractionforheattoleranceincrispheadlettuce AT beiquanmou geneticvariationandgenotypebyenvironmentinteractionforheattoleranceincrispheadlettuce |