Genetics of Stay-Green Trait and Its Association with Leaf Spot Tolerance and Pod Yield in Groundnut

Autor: Rukiya Danful, Yussif Baba Kassim, Doris Kanvenaa Puozaa, Richard Oteng-Frimpong, Masawudu Abdul Rasheed, Alexander Wireko-Kena, Richard Akromah
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: International Journal of Agronomy, Vol 2019 (2019)
Druh dokumentu: article
ISSN: 1687-8159
1687-8167
DOI: 10.1155/2019/3064026
Popis: Despite its importance in providing income and food for smallholder farmers, fodder for livestock, and improving soil fertility through biological nitrogen fixation, groundnut yields are lowest on farmers’ fields in Sub-Saharan Africa due to biotic and abiotic constraints. Foliar fungal diseases account for over 80% reduction in groundnut productivity in some parts of Ghana. Unfortunately, chemical control of these foliar diseases has not yielded the desired results. Meanwhile, advances in phenotyping for disease tolerance in other crops have established a strong relationship between stay-green trait and foliar disease tolerance. However, this relationship has not been explored in groundnut. This study was designed to determine the genetic control of the stay-green trait and its relationship with leaf spot disease severity in groundnut. Twenty-five advanced groundnut breeding lines with varying degrees of tolerance for leaf spot tolerance were evaluated under diseased and disease-free conditions, after which four were selected for genetic studies. Results showed significant (p
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