• MANINDER

In the present study, we report the phenomenon of cytomixis in some individuals of Ranunculus laetus showing chromatin transfer at the different stages of meiosis I. In most of the cases, two to six PMCs are involved in chromatin transfer. The migration of chromatin is either complete or partial, resulting in denucleated, double nucleolated, hypoploid and hyperploid PMCs. Single or multiple cytoplasmic channels between two or more proximate PMCs have been observed at prophase I. PMCs involved in cytomixis showed various other meiotic irregularities such as chromatin stickiness, asynchronous disjunction of bivalents and laggards. Present study depicts cytomixis and associated meiotic irregularities causing a significant reduction in pollen fertility which further resulted into formation of heterogeneous-sized fertile and sterile pollen grains.

Ranunculus laetus, cytomixis, meiotic irregularities, chromatin stickiness, pollen grains

"Cytomixis and associated meiotic abnormalities resulted into abnormal sporads and low pollen fertility in Ranunculus laetus.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.306-311, August-2018, Available :http://www.jetir.org/papers/JETIR1808793.pdf

"Cytomixis and associated meiotic abnormalities resulted into abnormal sporads and low pollen fertility in Ranunculus laetus.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp306-311, August-2018, Available at : http://www.jetir.org/papers/JETIR1808793.pdf