The Journal of Indian Botanical Society

UGC CARE (Group 1)
  • Year: 2010
  • Volume: 89
  • Issue: 3and4

Induced Cytomixis in Cicer Arietinum L. Var.-50 by The Treatment of Trichloro Acetic Acid

  • Author:
  • Farah Jabee, Danish Shahab, M.Y.K. Ansari Sazada Siddiqui, Zeba Khan, Honey Gupta
  • Total Page Count: 4
  • DOI:
  • Page Number: 386 to 389

Cytogenetics and Mutation Breeding Laboratory, Department of Botany, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India

Abstract

In present investigation, cytomixis was observed during different stages of meiosis in trichloro acetic acid (TCA) treated population of Cicer arietinum L. Cicer arietinum L., a member of family Fabaceae, an important pulse crop used as vegetable, silage, forage and stockfed. Cytomixis was observed to occur in forms of cytoplasmic connections and direct fusion of pollen mother cells (PMCs). The migration of nuclear content involved all the chromatin/chromosomes or part of it from donor to recipient cell/cells. The occurrence of PMCs with chromosome number deviating from the diploid number (2n= 16) through the process of cytomixis may lead to the production of aneuploid and polyploid gametes. Stickiness of chromosomes was observed in all the populations treated with various concentrations of TCA except in 0.01% concentrations. A dose dependent increase in the percentage of PMCs showing cytomixis was found with the increasing concentrations of TCA. The percentage of pollen sterility is clearly affected by cytomixis and stickiness. It seems possible that genetic factors might have also contributed towards the pollen sterility.

Keywords

Cicer arietinum L, cytomixis, microsporogenesis, TCA