학술논문
Analysis of Chronological Variation in Pedigree and Agronomic Traits of 325 Korean Rice Varieties
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- 영문명
- 발행기관
- 한국육종학회
- 저자명
- Gihwan Yi
- 간행물 정보
- 『Plant breeding and biotechnology』Vol.8 No.4, 426~433쪽, 전체 8쪽
- 주제분류
- 농수해양 > 기타농수해양
- 파일형태
- 발행일자
- 2020.12.01
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국문 초록
영문 초록
Rice (Oryza sativa L.) is a staple crop in Korea, which is cultivated over 700,000 ha and produces a half million tons of rice every year. Rice research and varietal improvement have been dynamic, changing in line with public demands and needs. Since the 1970s, plant architecture has been improved to increase yield components. In the 2000s, a new emphasis was placed on grain quality and biotic and abiotic stress resistance, and the rice varieties became more diversified according to reduced consumption and increased demands of processing industries. As a result of extensive research, 232 (71.4%) were categorized as good quality for eating in rice bowls, 27 (8.3%) were high yielding, and 21 varieties (6.5%) were for waxy rice among 325 varieties. The culm length was continuously reduced for lodging resistance, and panicle length and number of seeds per panicle increased. Finally, milled rice yields increased by 13% from 491 kg/10a in the 1980s to 555 kg/10a in the 2010s. One of the potential risks in Korean rice breeding is the narrow pool of genetic diversity. The parental origins of 325 Korean varieties show that 66% of the varieties originate from two Korean-bred stocks and 26% of the varieties have at least one parent from Japanese stocks. The limited genetic diversity has a negative influence on hybrid vigor and may lead to potential problems for Korean rice breeding in the future.
목차
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
ACKNOWLEDGEMENTS
REFERENCES
해당간행물 수록 논문
- Genetic Analysis Reveals a Major Effect QTL Associated with High Grain Zinc Content in Rice (Oryza sativa L.)
- Screening of Salinity Tolerance and Genome-Wide Association Study in 249 Peanut Accessions (Arachis hypogaea L.)
- Trait Association, Genetic Analyses and Fatty Acid Profiles in Oilseed Producing Rapeseed-Mustard (Brassica spp.) Genotypes
- Genetic Diversity of Fatty Acids, Tocols, Squalene, and Phytosterols in Grains of 157 Rice Cultivars Bred in Korea
- Development of a Mutant Population of Micro-Tom Tomato Using Gamma-Irradiation
- Genetic Parameters and Multivariate Analysis to Determine Secondary Traits in Selecting Wheat Mutant Adaptive on Tropical Lowlands
- Complete Chloroplast Genome of a Milk Thistle (Silybum marianum) Acc. ‘912036’
- Genome-Wide Association Study for Flowering Time in Korean Cowpea Germplasm
- FISH Karyotype Comparison of Platycodon grandiflorus (Jacq.) A. DC. ‘Jangbaek’ and Its Colchicine-Induced Tetraploid ‘Etteumbaek’
- Two Complementary Genes, SBE3 and GBSS1 Contribute to High Amylose Content in Japonica Cultivar Dodamssal
- A New Approach for Glutinous Rice Breeding through Dull Genes Pyramiding
- Analysis of Chronological Variation in Pedigree and Agronomic Traits of 325 Korean Rice Varieties
- Genetic Analysis of Anthocyanin Pigmentation in Sterile Lemma and Apiculus in Rice
- Detection of Whole-Genome Resequencing-Based QTLs Associated with Pre-Harvest Sprouting in Rice (Oryza sativa L.)
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