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Автор Jolley, V.D.
Автор Brown, J.C.
Автор Davis, T.D.
Автор Walser, R.H.
Дата выпуска 1986
dc.description AbstractA7, a new soybean [Glvcine max (L.) Merr.], developed through plant breeding is considered to be more Fe‐efficient than cultivars currently available. The objective of this investigation was to determine if recognized factors in the Fe‐stress response mechanism may have been altered in A7 soybean to make it more Fe‐efficient than the A2, Hawkeye (HA) and Bragg (Fe‐efficlent) and the Pride B216 (Pride), T203, and Anoka cultivars (Fe‐inef‐ficient). The release of hydrogen ions and ‘reductants’ by the roots were the two parameters of the Fe‐stress response studied in this investigation. The effect of plant number per liter of solution was also considered by using 20 and 28 plants per 14 liters of nutrient solution. Compared to A2, HA, Bragg, Pride, Anoka and T203 soybean cultivars, A7 released more hydrogen ions and ‘reductant’ from its roots in the zero Fe treatment and also maintained higher Fe and chlorophyll concentrations. This could explain why A7 soybean grows better than the other soybeans on calcareous soils where Fe availability limits plant growth. The other cultivars responded to Fe‐stress best when a small amount of Fe was present in the nutrient solution. Greater Fe‐stress response was evident with 28 plants/14 liters than 20 plants/14 liters of nutrient solution. Successful development of the Fe‐efficient soybean should serve as an example for future plant breeding of other Fe‐efficient plant species.
Формат application.pdf
Издатель Taylor & Francis Group
Копирайт Copyright Taylor and Francis Group, LLC
Тема Chlorophyll
Тема Glycinemax (L.) Merr
Тема Iron Content
Тема Leaf
Тема pH
Тема Reductant
Тема Root
Название Increased Fe‐efficiency in soybeans through plant breeding related to increased response to Fe‐deficiency stress. I. Iron stress response
Тип research-article
DOI 10.1080/01904168609363451
Electronic ISSN 1532-4087
Print ISSN 0190-4167
Журнал Journal of Plant Nutrition
Том 9
Первая страница 373
Последняя страница 386
Аффилиация Jolley, V.D.; Department of Agronomy and Horticulture, Brigham Young University
Аффилиация Brown, J.C.; Department of Agronomy and Horticulture, Brigham Young University
Аффилиация Davis, T.D.; Department of Agronomy and Horticulture, Brigham Young University
Аффилиация Walser, R.H.; Department of Agronomy and Horticulture, Brigham Young University
Выпуск 3-7
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