벼의 三染色體 植物의 形態的 및 細胞學的特性

• 영문명: Morphological and cytological characteristics of established trisomics in rice plant, oryza sativa L.
• 발행기관: 한국육종학회
• 저자명: Young Bourn Shin(辛英範) Kyung Min Yoon(尹景民)
• 간행물 정보: 『한국육종학회지』Vol.18 No.4, 46~50쪽, 전체 5쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 1986.12.30

영문 초록

The morphological characteristics and chromosomal behaviour at meiosis were examined for the trisomics of the rice plants, which derived from the crosses between triploids and diploids of the cultivar, Gwanchul. The trisomic plants, having chromosome number of 2n=25 were classified into 8 groups on the basis of their morphological traits. The major morphological traits, vigorousity, growth habit, plant height, leaf color, panicle shape, spikelet size and percent seed setting. were significantly different each other among 8 trisomic groups. Among these morphological traits, the spikelet character, such as spikelet length and width, and their ratio of length / width, were considered to be useful criteria for the classification of trisomic types at maturity. Eight types of the trisomics could be classified into 3 groups according to chromosomal pairing configuration at first division of meiotic phrophase. Three trisomic types out of 8 trisomics showed higher frequency of trivalent pairing than that of univalent formation, and the other 3 trisomic types showed higher frequency of univalent formation than trivalent pairing. The remaining two trisomic types, among 8 trisomic groups, were observed as about same ratio in the univalent and trivalent formation.

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