Genetic gain from selection and potential for improving alfalfa phosphorus uptake and removal from soils heavily amended with poultry litter

Alfalfa ( Medicago Sativa L.) is increasingly adopted in the southeastern USA as a companion crop in bermudagrass ( Cynodon dactylon L.) pastures, where poultry litter is excessively used as source of N fertilizer. This research explores the extent of genetic variation in phosphorus (P) accumulation...

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Bibliographic Details
Published in:Euphytica 2016-05, Vol.209 (2), p.495-506
Main Authors: Missaoui, Ali M., Young, Joseph
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biotechnology
Cynodon dactylon
Fertilizers
Genetic research
Life Sciences
Medicago sativa
Plant Genetics and Genomics
Plant Pathology
Plant Physiology
Plant Sciences
Poultry industry
Soil acidity
Soils
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Summary:Alfalfa ( Medicago Sativa L.) is increasingly adopted in the southeastern USA as a companion crop in bermudagrass ( Cynodon dactylon L.) pastures, where poultry litter is excessively used as source of N fertilizer. This research explores the extent of genetic variation in phosphorus (P) accumulation and uptake in alfalfa germplasm grown in a soil heavily amended with poultry waste, and the expected genetic gain from selection for P accumulation and uptake. Eighteen commercial and experimental populations of alfalfa were evaluated in a soil, heavily amended with chicken litter. The soil pH was 6.8 and Mehlich-1 P content was 1039.7 kg ha −1 . Significant genetic variation was observed in P accumulation, forage yield, and P uptake and removal (p 
ISSN:0014-2336
1573-5060
DOI:10.1007/s10681-016-1677-3