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Titre : Evaluation of Growth, Yield and Yield Components of Some Groundnut (Arachis hypogaea L.) Mutant Genotypes Under Irrigation

Auteur : Amgad Salah Abalrazig Abdallah

Université de soutenance : University of Khartoum

Grade : Master of Science in Field Crops 2020

Résumé
A field experiment was conducted in the Demonstration Farm, Faculty of Agriculture, University of Khartoum, Shambat for one season (July, 2019) to evaluate the field performance of 21 groundnut mutant genotypes (two check cultivars plus 19 mutant lines) under irrigation. The experiment was arranged in a randomized complete block design with three replications. The following parameters were measured : number of days to 50% flowering, number of days to maturity, plant height, chlorophyll content, leaf area, leaf area index, relative water content (%), number of branches per plant, number of pods per plant, pod yield, seed yield, number of seeds per pod, 100-seed weight, shelling out-turn (%), pod yield )kg.ha-1( and seed yield )kg.ha-1(. The statistical analysis showed significant differences (p ≥ 0.05) among the evaluated genotypes in number of days to 50% flowering, number of days to maturity, plant height, chlorophyll content, leaf area, leaf area index, and 100- seed weight. The results also showed no significant differences (p˂0.05) among the evaluated genotypes in number of pods per plant, relative water content (%), number of branches per plant, pod yield, seed yield, number of seeds per pod, shelling out-turn (%), and pod and seed yield (kg.ha-1). For some traits such as plant height the mutant’s genotypes (G23-4, G17-1and Gs1-81s) exceed their sister cultivars in their performance they recorded (17.1 cm, 20.0 cm, 25.0 cm, 26.8 cm) respectively .On the other hand, the check cultivars had better performance than thier mutant’s genotypes in days to 50% flowering it recorded (33 days). Since the differences among the mutant lines and their sister lines were significant in some traits it can be concluded that the doses of radiation applied clearly induced mutation in some traits which could be used in future breeding programs

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