CYTOLOGICAL STUDY IN WILD OAT (AVENA FATUA LINN.) POPULATIONS FROM NORTH WEST INDIA
AKSHITA DHALIWAL *
Department of Agriculture, Public College, Samana, Panjab
RAJDEEP SINGH DHALIWAL *
Department of Agriculture, G.S.S.D.G.S. Khalsa College, Patiala, Punjab
R. C. GUPTA *
Department of Botany, Punjabi University, Patiala, Punjab
*Author to whom correspondence should be addressed.
Abstract
Meiotic studies were performed on forty seven populations of Avena fatua L. from North West India. All the populations are hexaploid (2n=42) with x=7. The more common meiotic abnormalities are those with presence of bridges and laggards at anaphases and telophases, non-oriented bivalents at the equatorial plate in Metaphase. Other, less common meiotic abnormalities such as cytomixis, chromosome stickiness and presence of interbivalent connections are also found in few populations. Although meiotic abnormalities cause pollen sterility, there is no correlation between these abnormalities and pollen sterility.
Keywords: Avena, Non-oriented bivalents, Cytomixis,, Chromosome stickiness, interbivalent connection.