포장 특성이 우수한 고품질 복합내병충성 벼 품종 ‘드리미3호’ 육성
Breeding of “Drimi3ho” a High-Quality, Multi-Resistant Rice Cultivar having Excellent Field Agronomic Traits Yoon-
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Rice is one of the most important food crops in the world, but brown planthopper (BPH, Nilaparvata lugens stal) causes a significantloss of rice yield. Due to climate change, different races of rice-damaging species are evolving at an accelerated pace, thus, creating a needto breed multi-resistant rice cultivars for a stable food supply. In 2001, “Samgang” and “Nagdong” were crossed at the Plant Molecular BreedingLaboratory of the Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu Korea. “Drimi3ho” is a resistantand high-quality rice cultivar that was bred by backcrossing a line having excellent agronomic traits with “Ilmi.” The heading date of “Drimi3ho”was August 12 (104 d after sowing), and it was a medium-maturing cultivar that matured 3 d earlier than “Ilmi” (August 15, 107 d aftersowing). Its culm length was 81 cm, panicle length was 18 cm, panicle number per hill was 16, spikelet number per panicle was 113, ripenedgrain ratio was 93.2%, and 1,000-grain weight was 24.3 g. “Drimi3ho” was highly resistant to blast disease and bacterial blight (K1, K2,and K3), rice stripe virus, rice dwarf virus, rice black-streaked dwarf virus, and BPH. When “Drimi3ho” was milled, the milled grain wasclear and transparent; moreover, the grains were semi-round and short-type. Moreover, “Drimi3ho” had lower protein and amylose contentand tasted better than “Ilmi.” When “Drimi3ho” was grown on an ordinary plantation in the southern mountainous area, the yield was 563 kg/10a(Registration No. 5621).
Abstract
Rice is one of the most important food crops in the world, but brown planthopper (BPH, Nilaparvata lugens stal) causes a significantloss of rice yield. Due to climate change, different races of rice-damaging species are evolving at an accelerated pace, thus, creating a needto breed multi-resistant rice cultivars for a stable food supply. In 2001, “Samgang” and “Nagdong” were crossed at the Plant Molecular BreedingLaboratory of the Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu Korea. “Drimi3ho” is a resistantand high-quality rice cultivar that was bred by backcrossing a line having excellent agronomic traits with “Ilmi.” The heading date of “Drimi3ho”was August 12 (104 d after sowing), and it was a medium-maturing cultivar that matured 3 d earlier than “Ilmi” (August 15, 107 d aftersowing). Its culm length was 81 cm, panicle length was 18 cm, panicle number per hill was 16, spikelet number per panicle was 113, ripenedgrain ratio was 93.2%, and 1,000-grain weight was 24.3 g. “Drimi3ho” was highly resistant to blast disease and bacterial blight (K1, K2,and K3), rice stripe virus, rice dwarf virus, rice black-streaked dwarf virus, and BPH. When “Drimi3ho” was milled, the milled grain wasclear and transparent; moreover, the grains were semi-round and short-type. Moreover, “Drimi3ho” had lower protein and amylose contentand tasted better than “Ilmi.” When “Drimi3ho” was grown on an ordinary plantation in the southern mountainous area, the yield was 563 kg/10a(Registration No. 5621).
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