Adaptability of Korean cultivars and its potential as genetic donor for rice breeding in the Philippines

Issue Date

2019

Abstract

Korean rice (tong-il type) cultivars are known for excellent grain quality and high yield. However, their full potential can only be exploited if properly evaluated under Philippine climatic conditions. Selected Korean and Philippine rice cultivars were tested at PhilRice, Nueva Ecija; San Luis, Aurora; Balilihan, Bohol; Carmen, Bohol; Quezon; Isabels; and Tabuk-Kalinga from 2011 WS-2012 WS. Further testing was done in 2013-2017 dry and wet seasons. Significant (p=<0.05) yield variation was recorded in all locations and partitioning of sum of squares of different components revealed that 50.9% of variability was due to environment, 17.6% due to genotype and 31.5% due to Genotype and Environment Interaction. PhilRice, Nueva Ecija in 2012 DS was the highest-yielding environment and Milyang 23 was the most stable and high-yielding cultivar. Widely adapted cultivars include Dasanbyeo, Gayabyeo and Hyangmibyeo 2. Location-specific cultivars were also identified. Jinmibyeo was adapted in Quezon, Isabela; PSB Rc 82 (local check), Hangangchal 1, and IR79042 in PhilRice Nueva Ecija; NSIC Rc 220 in San Luis, Aurora; and Saegyejinmi in Tabuk, Kalinga. In PhilRice Nueva Ecija, more cultivars were tested and Taebaegbyeo had the highest yield. In general, low yield (0.7-5.7 t/ha) was observed in early-maturing japonica cultivars which were mostly susceptible to pests and diseases. Korean cultivars still had high grain quality traits even when grown under tropical conditions. Due to stability of grain yield and quality, these cultivars are being used as donor parents for breeding new rice varieties in the Philippines.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463X

Volume

44

Issue

1

Page

25-35

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Language

English

En – AGROVOC descriptors

ORYZA SATIVA; VARIETIES; ADAPTABILITY; GRAIN; YIELDS; GERMPLASM; PHILIPPINES

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