벼 湛水表面直播에 있어서 뿌리形質과 倒伏抵抗性의 關係

• 영문명: Relationship between root characters and lodging resistance of rice in direct seeding on flooded paddy surface
• 발행기관: 한국육종학회
• 저자명: Bo Kyeong Kim(金補經) Jin Il Choung(鄭鎭一) Hyun Tak Shin(申鉉卓) Seon Yong Lee(李善龍)
• 간행물 정보: 『한국육종학회지』Vol.27 No.3, 276~283쪽, 전체 8쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 1995.09.30

영문 초록

To determine the character useable for indicator of root-lodging resistance and to understand the relationship between the root-lodging resistance and root characteristics at sixty days after seeding and/or at twenty days after heading, and beween those and canopy characteristics of rice plant, forty four rice varieties or promising lines were grown under direct seeding on flooded paddy surface. Root dry weight(RDW), top dry weight(TDW), root diameter(RD), RD×RDW and RD×root length(RL) were significantly different among five rice groups classified by degree of lodging(0~9). The degree of root-lodging showed significant negative correlation with both RD or RD×RDW and RL or RD×RL. RD, RDW, RD×RDW and RD×RL showed considerably high heritability, while RL showed relatively low one. The characters greatly contributed to root-lodging resistance positively or negatively were RD×RL, RD×RDW, RD, RL and RDW at sixty days after seeding. Both TDW and RDW at sixty days after seeding were highly associated with those at twenty days after heading. The resistant rice varieties to root-lodging in field revealed thicker root(RD : 0.81㎜＜) than the susceptible one(RD : ＜0.65㎜) at sixty days after seeding. The varieties below 0.35 in RD×RDW showed 5~7 degree of root lodging in field, while those of 0.36~0.44, 0~3, and those above 0.45 in RD×RDW did not exhibited root lodging.

목차

ABSTRACT

緖言

材料 및 方法

結果 및 考察

摘要

引用文獻