To understand plant evolution and diversification, information regarding chromosome number meiotic behavior is imperative. The present study was carried out to determine the count, behavior, pollen fertility, seed set of a medicinally important Peganum harmala. Two cytotypes, diploid tetraploid are growing in western Himalaya; cytotype (2n=2x=24) Kashmir Himalaya, (2n=4x=48) Trans Ladakh. Chrom...

Background & Aim: The plants of the greenhouse have been affected by infestation of the pest Trialeurodes vaporariorum, called greenhouse whitefly, which markedly reduced production. Synthetic insecticides have been widely developed and, their extensive use has brought about disadvantages, like environmental disturbance, pest resistance, lethal effects on non target organisms ...

The objective of this study was to quantify the effects of protection on herbaceous species composition, total plant cover, dry matter, plant density, floristic richness and diversity. Characteristics of vegetation under continued grazing and protected area for 10 and 65 years were examined in a degraded arid environment in South Tunisia. Our results show that protection enhances significantly ...