Effects of Aeration Period and Temperature after Imbibition on Growth of Mungbean Sprouts

침종 이후의 Aeration 기간과 온도에 따른 숙주나물의 생장

  • Kang Jin Ho (Research Institute of Life Sci., Gyeongsang Natl. Univ.) ;
  • Ryu Yeong Seop (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Yoon Soo Young (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Jeon Seung Ho (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Cho Sook Hyon (Gyeongnam Agricultural Research & Extension Services)
  • 강진호 (경상대학교 생명과학연구소) ;
  • 류영섭 (경상대학교 농업생명과학대학) ;
  • 윤수영 (경상대학교 농업생명과학대학) ;
  • 전승호 (경상대학교 농업생명과학대학) ;
  • 조숙현 (경남농업기술원)
  • Published : 2004.12.01

Abstract

Lateral roots formed on mungbean sprouts should lower their quality. The study was carried out to clarify the effects of aeration periods (AP; 1, 2, 3, and 4 hours) and temperature (AT; 20, 30, and $40^{\circ}C$) after 5 hour seed imbibition into 50 ppm benzyladenopurine (BA) solution on growth and morphological characters of mungbean (cv. Keumseongnogdu, Owoolnogdu and Zhong Lu 1) sprouts. On the 6th day, the mungbean sprouts were sorted by 4 categories on the base of hypocotyl lengths; > 7cm, 4 to 7cm, < 4cm, and non-germination to calculate their composition rates, number of lateral roots, lengths of hypocotyl and root, diameters at middle and upper parts of hypocotyl, fraction fresh and dry weights were measured. AP more affected growth of the cultivars than AT showing little effect on them. In the composition rate of the above 4 categories, cv. Zhong Lu 1 had the highest rate in longer than 7cm but nearly the same rate in AP treatments. Rates of longer than 4cm hypocotyls in cv. Keumseongnogdu, Owoolnogdu were increased with longer AP but their rates of shorter than 4cm showed reverse response to the former. Formation rate and number of lateral roots per sprout were decreased with longer AP, showing more severe decrement when delayed 3 to 4 hour AP. Upper part of hypocotyls and roots were more thickened and shortened in longer AP, respectively. Total fresh weights had no significant difference between AP treatments while hypocotyl fresh weights were increased with longer AP. It was concluded that in mungbean sprout culture aeration from BA treatment to the first watering permitted at least 4 hours.

콩나물 세근 발생 억제용으로 고가의 BA가 주로 이용되고 있다. 본 연구는 BA처리효과를 극대화하기 위한 aeration에 관한 정보를 제공하고자 BA 용액에 침종된 종자(금성녹두, 어울녹두, 중록1호)를 aeration 기간(1, 2, 3, 4시간)과 온도(20, 30, $40^{\circ}C$)를 달리하여 처리한 후 6일간 재배된 숙주나물을 조사한 결과를 요약하면 다음과 같다. 1. 침종 직후부터 첫 관수까지의 aeration기간과 온도에 따른 숙주나물의 생장과 형태는 처리기간의 영향을 크게 받는 반면, 온도의 영향은 아주 미미하였다. 2. Aeration 기간 따른 하배축 길이별 비율에서 중록 1호는 타공시품종에 비하여 7cm 이상의 비율에서 가장 높았고 처리기간간 차이가 거의 없었던 반면, 금성녹두와 어울녹두는 상품화가 가능한 4cm이상의 비율에서 처리기간이 증가할수록 증가되었으며, 비정상개체의 비율은 이와 정반대의 결과를 보였다. 3. 세근발생 비율과 개체당 세근수는 aeration 기간이 길어질수록 감소되었으나 aeration기간이 3시간에서 4시간으로 늘어날 경우 감소 정도가 가장 큰 것으로 나타났다. 4. Aeration기간이 길어질수록 자엽 바로 아래 부분의 하배축 직경이 굵어지고 뿌리 길이는 짧아지는 경향을 보였으나 하배축의 길이와 중간부분의 직경은 aeration기간간에 차이가 없었다. 5. Aeration기간이 길어질수록 하배축의 생체중은 증가하였으나 개체당 전체 생체중은 aeration기간간에 차이가 없었다.

Keywords

References

  1. Bae, K G, S W Nam, K. N KIm, S J. Sinn, and Y H. Hwang 2002. Water uptake and gerrrunation of soybean seed as affected by soakmg soak- ing condinon. J Korean Soc Hort SCI 47(3) 244-249
  2. Jeong, S H 1982 Studies on sprout production and effect of some growth regulator treatment on the growth of soybean and mungbean sprout. MSc Thesis, Kyung Hee Uruversity
  3. Kang, C K, D W Yun, Y. K Kim, and H T Choe. 1996 Determmanon of rrummum concentration and drppmg time for mlubition of lateral root and growth stimulation in soybean sprouts as mfluenced by benzy1ademne J Korean Soc Hart SCI 37(6) 773-776
  4. Kang, C K, J M Lee, and H Saka 1989 Effects of plant growth reg-ulator treatments on the growth and lateral root formanon 10 soybean sprouts. I Effect of plant growth regulator treatments on the growth in soybean sprouts. Korean J Weed SCI 9( 1) 56-58
  5. Kang, C K. and Y K KIm 1997 Effect of plant growth regulators on growth of soybean J Korean Soc Hort SCI 38(2) 103-106
  6. Kang, 1. H and G A Song. 2003 Clean soybean sprouts produced by usmg light and seed floatmg on water and Its production model Patent number 0379839, Korean Patent Adrmrustranon
  7. Kang, J H, B S Jeon, S W Lee, J I Chung, and S I Slum. 2003a Effect of benzyladenopurme treatment time dunng imbibition on growth of soybean sprouts and Its cost Korean J Crop SCI 48(3) 232-237
  8. Kang, J H, B. S. Jeon, Y 1. Cho, C J, Park, S Y Yoon, and S. H Jeon 2004b Effects of aeration temperature and penod after BA treatment on growth and lateral root formation of soybean sprouts Korean J Crop SCI. 49(3) . 216-221
  9. Kang, 1. H , Y. J. Cho, B S Jeon, S. Y Yoon, S. H Jeon, and H K KIm 2004b. Effects of benzyladenopurme concentration on growth and morphology of soybean sprouts and companson With sellmg products. Korean J Plant Res 17(2). 94-101
  10. Park, M H, D C. KIm, B S KIm, and B Na1lmgoong. 1995 Studies on pollution-free soybean sprout production and circulation market improvement Korea Soybean Digest 12(1) 51-67
  11. Yang, C B , S W Lee, Y S Ko, and S K Yoon 1979 Studies on the effective utilization of soybean Part I Expenments on the improvement of cultural methods for soybean sprouts. J Korean Soc. Food Nutr 8(1).1-8