Cytological observations in some hybrids between the rice species Oryza sativa L. and Oryza minuta Presl.

Mahani M.C., . and Mariam A.L., . and Zainon M.D., . and Zakri A.H., . (1994) Cytological observations in some hybrids between the rice species Oryza sativa L. and Oryza minuta Presl. [Proceedings Paper]

The chromosome number of F1 hybrid plants from Oryza sativa L. AA X O. minuta Presl. BBCC crosses that were produced through embryo culture was determined from root tips and pollen mother cells PMCs.The hybrids were triploid ABC with 36 chromosomes. An examination of meiosis at metaphase I in PMCs revealed the presence of a high number of univalents a few bivalents with occasional trivalents. The average numbers of univalents bivalents and trivalents were 29.26 3.28rod 0.07ring and 0.008 per cell respectively. The high number of univalents observed indicates very low or nil homology between genomes of O. sativa and O. minuta

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Abstract

The chromosome number of F1 hybrid plants from Oryza sativa L. AA X O. minuta Presl. BBCC crosses that were produced through embryo culture was determined from root tips and pollen mother cells PMCs.The hybrids were triploid ABC with 36 chromosomes. An examination of meiosis at metaphase I in PMCs revealed the presence of a high number of univalents a few bivalents with occasional trivalents. The average numbers of univalents bivalents and trivalents were 29.26 3.28rod 0.07ring and 0.008 per cell respectively. The high number of univalents observed indicates very low or nil homology between genomes of O. sativa and O. minuta

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Item Type:	Proceedings Paper
Additional Information:	Summary Ms
AGROVOC Term:	ORYZA
AGROVOC Term:	ORYZA SATIVA
AGROVOC Term:	ANALISIS HISTOCITOLOGICO
AGROVOC Term:	HIBRIDOS F1
AGROVOC Term:	CROMOSOMAS
AGROVOC Term:	ARROZ
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:26
URI:	http://webagris.upm.edu.my/id/eprint/15448

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