Morphological and agronomic evaluation of tungro-resistant anther culture-derived lines of rice

Date

4-1994

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

Adviser/Committee Chair

Azucena L. Carpena

Abstract

Anther culture is considered very useful in modern plant breeding in that it reduces the time of obtaining homozygous lines from a heterozygous source from at least five generations to just one generation. Thirteen doubled haploid lines of rice regenerated from wither culture of reciprocal crosses made between three IR varieties and several donors of RTV resistance were compared with their Parents, in a two season study, in order to determine the amount of recombination of parental characters and the amount of breeding work still to be done. Results showed that only four lines. RTV3-AC1 (1R38/Utri Marah), RTV4-AC5 (1R36/Utri Rajapan). RTV3I-AC1 (Utri Merah/lR74). andRTV33-AC88 (Utri Raiapan/IR74) were relatively closer to their IR parent than among the rest of the materials in terms of their quantitative and qualitative characters. From among the four. RTV4-AC5 turned out to be the nearest line to the IR parent and therefore the bent in agronomic characteristics. A good amount of recombination of parental characters has occurred in these four line, especially RTV4-AC5. One or more generations of backcrossing to their respective IR Parents appear to be needed in many of the line. studied.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1994 A42 T33

Document Type

Thesis

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