Growth Characteristics of Sweet Potato (Ipomoea batatas) Cultivars according to Growth Period in Early Cultivation

Eom-Ji Hwang; Sang-Sik Nam; Joon-Seol Lee; Hyeong-Un Lee; Jung-Wook Yang

doi:10.7740/kjcs.2016.62.1.051

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Original Research Article

Growth Characteristics of Sweet Potato (Ipomoea batatas) Cultivars according to Growth Period in Early Cultivation 고구마 조기재배시 품종별 생육과 괴근비대 특성

31 March 2017. pp. 51-59

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Abstract

To obtain basic data on the effects of differences cultivation periods and methods on growth and development of sweet potato tuber. We investigated growth and development of six major cultivars showing different characteristics, such as dry type(Yulmi, YM; Jinhongmi, JHM), intermediate type(Pungwonmi, PWM; Hogammi, HGM), and purple type(Sinjami, SJM; Danjami, DJM). The average tuber weight of YM and JHM was 4.1 and 8.6 g respectively, 50 days after transplant. At 80 days, the weight of YM and JHM rapidly increased to 25.2 and 26.1 g, respectively. Finally, at 120 days, the weight of YM and JHM increased to 120.7 and 79.4 g, respectively. The average tuber weight of PWM and HGM was 13 and 3.3 g, respectively, 50 days after transplant. The development pattern of PWM showed a consistent increase in tuber weight during the cultivation period, an average weight of 104.2 g at 120 days. However, the tuber development pattern of HGM was different from that of PWM. The average tuber weight of HGM rapidly increased for 100 days after transplant and then showed no increase at 120 days. In case of purple type sweet potato, the average tuber weight of SJM consistently increased during the cultivation period, whereas DJM showed rapid increase in average tuber weight at 80 days after transplant. Korean consumers prefer small, round sweet potato approximately 100g in weight. Based on the results, YM, PWM and SJM are classified as early developing cultivars that can be harvested approximately 120 days after transplant. On the other hand, JHM, HGM, and DJM are classified as late developing cultivars that can be harvested approximately 130 days after transplant.

Keywords

cultivation

storage root

sweetpotato

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 62
No :1
Pages :51-59
Received Date : 2016-06-25
Revised Date : 2017-03-08
Accepted Date : 2017-03-09
DOI :https://doi.org/10.7740/kjcs.2016.62.1.051

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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