• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.309-309
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• 2022

This study investigated the antioxidant and yield properties of eight adzuki bean (Vigna angularis) cultivars under different mean temperature and sunshine hours in 2020 and 2021. The mean temperature in 2020 compared to 2021, which was normal, were lower during the pod extension and grain filling period. In addition, due to frequent rainfall during the vegetative perio d in 2020, there were fewer hours of sunshine compared to 2021. The Adzuki Bean yield in 2020 was about 13% lower than that in 2021 due to the decreased number of pods per plant and 100 seeds weight. The stability of yields was higher in 'Hongda' and 'Hongjin' than in 'Arari', which is the most cultivated in Korea. Also, the yields of these varieties were all higher than those of 'Arari' varieties for two years. Compared to 2021, in 2020, when weather conditions were not favorable, both antioxidant components and activity were higher. The cultivar 'Hongda' was a higher antioxidant component and activity than others for two years. The results suggested that the antioxidant component and activity were good in 2020 with about 13% decrease in yield compared to a normal year in 2021 due to mean temperature and sunshine hours.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.3
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• pp.308-313
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• 1995

In relation to shortening generation by using embryo culture of barley immature seed, it is important to find out profitable embryo age for embryo culture and to understand the relationship among embryo and other characters. Two varieties(Olbori and Dusan #12) were cultivated under two growth conditions(15/10 and 25/15$^{\circ}C$). The embryos were aseptically excised when immature seeds were collected 9, 13, 17, 21, 25 and 29 days after heading and cultured on $B_5$ medium. On the 21st day after heading, the length of embryos from top or middle part of spike was longer than that from bottom part. Embryos from bottom part under low temperature condition had the shortest length. Shoot length, root length and root number after embryo culture were little difference among three parts of spike under high temperature condition. Under low temperature, seedlings from bottom part of spike were inferior to those from top or middle part. Length of 29-day-old embryos under low temperature condition was similar to that of 17-day-old ones under high. Under high temperature condition, the length of 17-day-old embryo had positive correlation with kernel width, shoot length, root length and root number, but that of 21-day-old one didn't have. Seventeen-day-old embryos obtained from 25/15$^{\circ}C$ growth condition seem to be efficient to shortening generation by using embryo culture.