Variability among and within doubled haploid lines of rice (oryza sativa L.) : [Calambi X IR34686-179-1-2-1

Date

10-1992

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Teresita H. Borromeo

Abstract

Twenty-four doubled haploid lines derived from six DO groups (four sublines per DH group) regenerated from Calambi x IR34686-179-1-2-1 were evaluated to determine variation among and within doubled haploid groups and to compare agronomic traits of doubled haploid lines with parental lines and check. Significant variation was observed among DH groups for days to heading, total tiller number, productive tiller number, and panicle length. Variation among sublines was observed for days to heading, total tiller number, productive tiller number, plant height, panicle length, percent sterility, seed size ratio, and 100 grain weight. Generally, all sublines performed better than Calambi, performed similarly with 11134686-179-1-2-1, but performed poorer than 1074 for all characters tested. The variability observed among DH lines could be due to the combined effects of segregation, mutation and/or selection. Regenerated plants might have come from different cells with multiple mutations induced during anther culture.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1992 A42 T34

Document Type

Thesis

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