Abstract
Yield is a complex quantitative trait largely influenced by the environment. Direct selection for grain yield is less efficient in improving groundnut productivity. The selection efficiency can be ...
Highlights
Cultivated groundnut (Arachis hypogaea L., AABB, 2 n = 4x = 40) known as peanut, is a legume crop that originated in South America through hybridization of its diploid ancestors, Arachis duranensis (AA) and Arachis ipaensis (BB), followed by spontaneous chromosome doubling (Talawar, 2004; Bertioli et al, 2015; Zhang et al, 2016)
The results revealed that yield was directly associated with plant height, number of pods per plant, hundred seed weight, genotypes under natural rosette disease (GRD) incidence and number of secondary branches
Positive correlation coefficients were recorded between hundred grain weight with days to flowering (P < 0.05, r = 0.47), days to maturity (P < 0.01, r = 0.57), number of primary branches (P > 0.05, r = 0.32), number of secondary branches (P < 0.01, r = 0.52), pod width (P < 0.001, r = 0.82) and pod length (P < 0.001, r = 0.61)
Summary
The crop is grown in tropical and subtropical countries for its high-quality oil (47–53%) and digestible protein (24–36%) (Maiti, 2002; Singh & Nigam, 2016). Several biotic, abiotic and socio-economic factors constraint groundnut produc tion in Malawi and other developing countries (Chala et al, 2014; Chikowo et al, 2015). The groundnut rosette disease (GRD), is among the major biotic constraints. It is a viral disease caused by a complex of three agents (Groundnut rosette assistor virus (GRAV), Groundnut rosette virus (GRV) and a satellite-RNA (satRNA) associated with GRV) and transmitted by an aphid (Aphis craccivora Koch). The development of high yielding cultivars that are resistant to both biotic and abiotic stresses, with farmerspreferred traits should be continuous and a priority
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
