Realization of Lodging Tolerance in the Aromatic Grass, Through Ploidy Intervention.

Artificial polyploidy that brings about increase in cell size confers changes in histo-morphology leading to altered phenotype, causing changes in physiological attributes and enhanced concentration of secondary metabolites. The altered phenotype is generally a manifestation of tissue hardiness reflected as robust plant type. Based on a case study undertaken on an industrially important grass, (2 = 60) valued for its citral rich essential oil, here we report that the artificial polyploidy not only brings about enhancement in concentration of essential oil but also facilitates lodging tolerance.

Seasonal temperature variations influence tapetum mitosis patterns associated with reproductive fitness.

Environmental stress in plants impacts many biological processes, including male gametogenesis, and affects several cytological mechanisms that are strongly interrelated. To understand the likely impact of rising temperature on reproductive fitness in the climate change regime, a study of tapetal mitosis and its accompanying meiosis over seasons was made to elucidate the influence of temperature change on the cytological events occurring during microsporogenesis. For this we used two species of an environmentally sensitive plant system, i.

Ploidy-mediated reduced segregation facilitates fixation of heterozygosity in the aromatic grass, Cymbopogon martinii (Roxb.).

In most medicinal and aromatic plants, the vegetative tissue (e.g., roots, stems, leaves) is the source of the economic product.