Meiotic studies in some selected angiosperms from the Kashmir Himalayas  

作　　者：Syed Mudassir JEELANI Santosh KUMARI Raghbir Chand GUPTA 

机构地区：[1]Department of Botany,Punjabi University,Patiala 147002,India

出　　处：《Journal of Systematics and Evolution》2012年第3期244-257,共14页植物分类学报（英文版）

摘　　要：As a part of our program to explore and evaluate genetic diversity of flowering plants of the Kashmir Himalayas, meiotic studies have been carried out on 150 wild species. Of these, Ca#ha alba （2n = 32）, Delphinium roylei （2n = 16）, D. uncinatum （2n = 16）, Ranunculus palmatifidus （2n = 28）, and Sedum heterodontum （2n 14） have been cytologically worked out for the first time. New intraspecific diploid or polyploid cytotypes have been recorded for Alehemilla vulgaris （2n = 34, 96）, Arabis amplexicaulis （2n = 16）, Impatiens amphorata （2n = 14）, I. racemosa （2n = 12）, I. sulcata （2n = 16, 12）, Meconopsis latifolia （2n = 14）, Potentilla supina （2n = 14）, Saxifraga cernua （2n = 16）, Sium latijugam （2n = 24）, and Vicatia coniifolia （2n = 44）. Four species, Arabidopsis thaliana （2n = 10）, Berberis vulgaris （2n = 28）, Potentilla nubicola （2n = 14）, and P. sericea （2n = 28）, have been cytologically reported for the first time from India. A large number of meiotic abnormalities have been observed in most of these species, leading to a reduction in pollen fertility and production of heterogeneous-sized pollen grains.As a part of our program to explore and evaluate genetic diversity of flowering plants of the Kashmir Himalayas, meiotic studies have been carried out on 150 wild species. Of these, Ca#ha alba （2n = 32）, Delphinium roylei （2n = 16）, D. uncinatum （2n = 16）, Ranunculus palmatifidus （2n = 28）, and Sedum heterodontum （2n 14） have been cytologically worked out for the first time. New intraspecific diploid or polyploid cytotypes have been recorded for Alehemilla vulgaris （2n = 34, 96）, Arabis amplexicaulis （2n = 16）, Impatiens amphorata （2n = 14）, I. racemosa （2n = 12）, I. sulcata （2n = 16, 12）, Meconopsis latifolia （2n = 14）, Potentilla supina （2n = 14）, Saxifraga cernua （2n = 16）, Sium latijugam （2n = 24）, and Vicatia coniifolia （2n = 44）. Four species, Arabidopsis thaliana （2n = 10）, Berberis vulgaris （2n = 28）, Potentilla nubicola （2n = 14）, and P. sericea （2n = 28）, have been cytologically reported for the first time from India. A large number of meiotic abnormalities have been observed in most of these species, leading to a reduction in pollen fertility and production of heterogeneous-sized pollen grains.

关 键 词：words abnormal meiosis ANGIOSPERMS chromosome numbers Kashmir Himalayas. 

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