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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Статья в журнале

yield correlations of selectable physiological traits in a population of advanced spring wheat lines grown in warm and drought environments  [2012]

Lopes, M.S.; Reynolds, M.P.; Jalal-Kamali, M.R.; Moussa, M.; et al.

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Genetic progress in yield will increase if more traits conferring better agronomic and physiological performance are brought together in the same variety through full exploitation of genotyping and phenotyping techniques in breeding. A set of 288 spring wheat advanced lines was tested in different countries in North Africa, Western and South Asia, as well as in Mexico (total of 12 environments) to: identify high yielding germplasm adapted to the former regions; identify sources of variation for physiological traits; and test the ability of physiological traits to predict yield. A group of high yielding advanced lines has been selected in these environments, but significant genotype by environment interactions were observed and were significantly explained (21% of yield variation) by soil pH and air temperature. Associations between traits were dependent on the environment, specifically TKW was positively associated with yield in almost all environments however in Sudan, negative associations were observed. In contrast cooler CT was consistently associated with yield and the trait showed moderate heritability. Agronomic and physiological variables were able to predict 27% of yield variation across advanced lines (R²% by ridge regression) using means of all environments and this model became more significant under stress environments (explaining around 34% of yield variation). Results suggested that if drought and heat adaptive traits are brought together in
one genotype, yields can be further increased particularly in low yielding environments.
Журнал
Field crops research
ISSN : 0378-4290

Библиографическая информация

Язык:
English
Тип:
Journal Article
В АГРИСе с:
2014
Том:
128
Стартовая страница:
129
Конечная страница:
136
Издатель:
Elsevier B.V.
Все названия:
"yield correlations of selectable physiological traits in a population of advanced spring wheat lines grown in warm and drought environments"@eng
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Библиографическая информация

Язык:
English
Тип:
Journal Article
В АГРИСе с:
2014
Том:
128
Стартовая страница:
129
Конечная страница:
136
Издатель:
Elsevier B.V.
Все названия:
"yield correlations of selectable physiological traits in a population of advanced spring wheat lines grown in warm and drought environments"@eng