Études cytomorphologiques induites par les radiations chez Capsicum annum L
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Des graines sèches de Capsicum annuum var. G4 ont été exposées à différentes doses de rayons gamma 10-60 kR avec un intervalle de dose de 10 kR et les plantes ont été testées pour leur radiosensibilité. L'étude a révélé que le pourcentage de germination, la survie des plantules, la colorabilité du pollen et la production de graines ont montré une réduction progressive avec une augmentation correspondante de la dose de rayonnement dans les descendances de la génération M1. Aux doses de 50 et 60kR, la mortalité des semis et une faible germination ont été enregistrées dans la génération M1. Les données ont été notées pour les paramètres ci-dessus pour les descendances M2 également et la même tendance a été discernée à travers les valeurs étaient relativement plus élevées dans M2 que dans la génération M1. Des plantules anormales, c'est-à-dire des plantules jumelles, des cotylédons triples, des cotylédons bilobés, des cotylédons épais et vert foncé, ont été observées dans la descendance M1, mais dans une faible proportion, et elles sont mortes après deux semaines. Morphologiquement, certaines plantes parmi les lignes traitées étaient faibles, en retard de croissance, avec une floraison tardive et une ouverture irrégulière, et des fruits plus petits par rapport au contrôle. Le contrôle cytologique de ces plantes a révélé que les chromosomes étaient collés et agglutinés. Ceci est probablement dû à l'action du gène ou des gènes contrôlant l'adhérence.
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