Abstract
The present study was conducted in Malwa region of Punjab, India in 2019–2020. A total of 10 weed species belonging to seven genera and four families were recorded from different crops. Meiotic analysis has revealed the chromosome numbers in different weed species as Datura innoxia (n= 12), Erigeron bonariensis (n= 13), Nicotiana plumbaginifolia (n= 10), Physalis angulata (n= 24), Sesbania bispinosa (n= 6), Sida cordifolia (n= 8), Solanum americanum (n= 12), Solanum nigrum (n= 36), Solanum villosum (n= 24), and Solanum virginianum (n= 12). Chromosome numbers of Solanum americanum and S. villosum have been worked out for the first time from the state of Punjab, India. Morphological features along with the chromosome numbers have authenticated the identity of weed species. Similarly, pollen fertility analysis has suggested the potential of seed production by the weed species and their subsequent invasiveness.
Publisher
Wildlife Information Liaison Development Society
Subject
Management, Monitoring, Policy and Law,Nature and Landscape Conservation,Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Reference29 articles.
1. Azeez, S.O., J.O. Faluyi & M. Oziegbe (2019). Cytological, foliar epidermal and pollen studies in relation to ploidy levels in four species of Physalis L. (Solanaceae) From Nigeria. International Journal of Biological and Chemical Sciences 13(4): 1960–1968.
2. Bamber, C.J. (1916). Plants of the Punjab Descriptive Key of the flora of the Punjab, North- West Frontier Province and Kashmir. Government Printing Press, Lahore, 652 pp.
3. Christenhusz, M.J.M. & J.W. Byng (2016). The number of known plants species in the world and its annual increase. Phytotaxa 261(3): 201–217.
4. Dangwal, L.R., A. Singh, T. Singh, A. Sharma & C. Sharma (2010). Effect of weeds on the yield of wheat crop in Tehsil Nowshera. Journal of American Science 6(10): 405–407.
5. Dash, S.S. & S. Kumar (2019). Plant Discoveries 2018. Botanical Survey of India, Kolkata, 182 pp.