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- Sriyani Rajapakse
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843-2133
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- J. Creighton Miller
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843-2133
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説明
<jats:title>Abstract</jats:title> <jats:p>A hydroponic experiment was conducted to determine the relationship between mycorrhizal dependency (MD) of cowpea [<jats:italic>Vigna unguiculata</jats:italic> (L.) Walp.] cultivars and their root morphology. Seeds of 19 cowpea cultivars with known MD levels were inoculated with <jats:italic>Glomus fasciculatum</jats:italic> and <jats:italic>Bradyrhizobium</jats:italic> in seedling trays. Twelve-day-old seedlings were transferred to a hydroponic culture system, where they were grown for 5 weeks. Leaf area, length of taproot, total root length, root weight, root abundance, average length of fine roots, number of nodules formed on lateral roots, and total nodule weight differed among cultivars. Less than 5% of the root length was colonized by mycorrhizal fungus in all cultivars. Average length of fine roots was negatively correlated with MD of cowpea cultivars; however, only 27% of the variability in MD was explained by this variable. Therefore, root morphology did not appear to determine MD in cowpea.</jats:p>
収録刊行物
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- HortScience
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HortScience 23 (3), 568-570, 1988-06
American Society for Horticultural Science