Seminal root elongation response of Philippine rice cultivars to different NH4+ concentrations

Issue Date

7-2018

Abstract

Plant roots are important organs for water and nutrient uptake from the surrounding soil. Crop breeders consider that an active root systems contributes to enhanced nutrient uptake and an important breeding target for producing higher yields. Thus, this study aimed to determine potential donor parents of root system development traits by measuring seminal root length of genotypes grown in hydroponic culture as an indicator of genetic variation. Eighty eight Philippine released and 1,247 traditional rice varieties were established and Ammonium (NH4+) served as a single source of nitrogen, with 5 muM NH4+ as stress, while 500 muM NH4+ as non-stress condition. Significant differences in the mean values of seminal root length were observed for both released and traditional varieties across NH4+ concentrations. Under stress condition, forty-seven genotypes were determined as elongating roots with seminal root length that were 2% to 42% longer than of the check-Kasalath. These genotypes may be utilized and further evaluated for root traits discovery and breeding efforts for the development of new varieties.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463X

Volume

43

Issue

Supplement no. 1

Page

108

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Subject

Oryza sativa L.; Rice varieties

En – AGROVOC descriptors

ORYZA SATIVA; VARIETIES; ROOT SYSTEMS; HYDROPONICS; ROOTS; LENGTH; ROOTING; NUTRIENT UPTAKE

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