수도 생육기간중 이상저온이 내습하였던 1980년에 동일위도상의 표고가 다른 두 개 지역, 수원(127˚ , 37˚ 20' 표고 37m)과 제천 (128.2˚ , N37˚ 10', 표고 280-300m)에다 Japonica 품종인 대골도, 진흥, 신002와 통일형품종 조생통일, 수원 287호(태백벼), wx 817-1-65-2-3(서울대 농대육성) 등을 4월 21일 파종 6월 1일 이앙하고 출수기, 간장, 수장 및 수량 관련형질들을 조사 비교 검토하였다. 1. 간장, 수장 및 1,000립중은 Japonica품종의 경우는 제천에서 통일형 품종의 경우는 수원에서 약간 작아지는 경향이었으나 유의적인 차이는 아니었다. 2. 수량구성요소중 주당 수수는 제천에서 현저히 증가되었는데 그 정도는 품종에 따라서 달랐으며, 임실율은 수원이 제천보다, Japonica 품종이 통일형 품종보다 높았는데 지역간 차이는 통일형 품종에서 현저하였다. 3. 지역에 따른 품종들의 품종군에 따라 달라 Japonica 품종들(대골도 제외)은 제천에서 월등히 높았으나 통일형 품종들은 제천에서 모두 감수되었다.

The present study was conducted to investigate the variations in morphological traits, yield and yield-related components of rice cultivars exposed to different weather conditions by growing at the locations with different altitude but with equal latitude. Three Japonica varieties (Daegoldo, Jinheung, Shin #2) and three Tongil type semi-dwarf varieties(Josaengtongil, Suweon 287, wx 817-65-2-3) were seeded at Suweon on April 21 and transplanted at Suweon (127~circ N37 20', altitude 37m) and Jechun (128.2~circ , N37 10', altitude 280-300m) on June 1 with the spacing of 30 ~times 15 em. The morphological traits, yield and yield-related components were measured. Culm length, paincle length and 1000-grain weight showed a little increase in Japonica varieties in Jechun as compared to those in Suweon and vice versa in semi-dwarf varieties, showing no significant differences. Number of panicles, per hill and number of spikelets per panicle among yield-related components showed remarkable increase in all varieties in Jechun as compared to those in 'Suweon but such inter-locational differences differed with varieties within varietal group and between varietal groups. On the contrary, grain fertility was higher in Suweon than that in Jechun and in Japonica varieties than that in semi-dwarf varieites , showing greater inter-locational difference in semi-dwarf varieties. Among Japonica varieties Jinheung and Shin #2 showed remarkable increase in yield in Jechun as compared to that in Suweon but in semidwarf varieties it was just the opposite. The importance of each of the yield-related component contributing to yield showed similar tendency 'regardless of locations in Japonica varieties. However, it was evidently different between locations in semidwarf varieties, where number of spikelets per panicle showed greatest direct effect on yield in Suweon but in Jechun so did grain fertility followed by the number of spikelets per panicle.

• Park S. Z. | 박순직
• E. W. Lee | 이은웅
• B. W. Lee | 이변우