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토양 과습처리에 의한 배 대목 Pyrus calleryana 와 Pyrus betulaefolia 집단의 유기물 함량 변화
원경호 ( Kyungho Won ),김윤경 ( Yoon Kyeong Kim ),마경복 ( Kyeong Bok Ma ),신일섭 ( Il Sheob Shin ),이욱용 ( Ug Yong Lee ),이별하나 ( Byul Ha Na Lee ),최진호 ( Jin Ho Choi ),이인복 ( In Bok Lee ),김명수 ( Myung Su Kim ) 한국환경농학회 2016 한국환경농학회지 Vol.35 No.3
BACKGROUND: There`s a long rainy season during the Summer in Northeast Asia, including Korea. Heavy rainfall during this season causes harm to tree`s root, and damped injury in the pear has been continuously reported. Pear Research Institute is breeding damp resistant rootstocks and investigating their mechanisms to relieve damped damages in the pear. METHODS AND RESULTS: Seedlings of Pyrus betulaefolia and P. calleryana were divided into two groups: control and damped, respectively. Damped group was treated by constant irrigation for 77 days and control group was maintained to keep the soil moisture pressure between 0 and -10 kPa. After the treatment, we analysed trees` growth rate, chlorophyll content, amino acids and total phenolic compounds. As a result, P. betulaefolia was sensitive to damped treatment while P. calleryana did not have significant differences between the control and damped treatment. It was observed that total contents for phenolic compounds were dramatically increased in P. betulaefolia while trees` growth rate, chlorophyll b and general amino acid contents were lowered by damping treatment. CONCLUSION: In some pear cultivars, growth habit is suppressed by damped damage. Pyrus calleryana displayed tolerances to damped damage in growth rate and some organic compound contents compared to P. betulaefolia. So we recommend to exploit P. calleryana as a pear rootstock rather than using P. betulaefolia.
생리장해 저항성 배 대목으로 선발된 ‘배연 1호’의 포장 성능 검정
강삼석(Sam-Seok Kang),조광식(Kwang-Sik Cho),손동수(Dong-Su Son),송장훈(Jang-Hoon Song),김윤경(Yoon-Kyeong Kim),정상복(Sang-Bouk Jeong),김정배(Jeong-Bae Kim),김명수(Myung-Su Kim),이상현(Sang-Hyun Lee) 한국원예학회 2008 원예과학기술지 Vol.26 No.3
This study was carried out to select a resistant rootstock against some physiological disorders and confirm the field performance test of selected pear (Pyrus pyrifolia) rootstock. ‘Chojuro’ and ‘Whasan’ which had shown higher physiological disorder occurrence such as yuzu skin, stony flesh, and cracking were grafted onto ‘Baeyeoen No.1’, ‘Cheongkye’, ‘Baegkye’, and two seedlings of ‘Cheongdangrori’ and ‘Okusankichi’. Tree growth, inorganic nutrient absorption, fruit quality, and some physiological disorder were investigated according to pear rootstocks. Tree growth of scion cultivars affected by rootstock cultivars did not show differences in both ‘Chojuro’ and ‘Whasan’ pear after grafting. When ‘Baeyoen No.1’ was used as a rootstock, yuzu skin in ‘Hwasan’ and stony flesh in ‘Chojoro’ occurred 26.7% and 14.3%, respectively. Although there were differences according to rootstocks, phosphate (P), calcium (Ca), and magnesium (Mg) were higher in in both scion cultivars grafted onto ‘Baeyoen No. 1’ than others those grafted onto other rootstock cultivars excepting potassium. As a result, Ca/K, Ca/Mg, and Mg/K values were also higher in the scion cultivars grafted onto ‘Baeyoen No. 1’. Consequently, ‘Baeyoen No.1’ rootstock reduced the physiological disorder such as yuzu skin and cracking in ‘Hwasan’ and yuzu skin and stony flesh in ‘Chojoro’. Therefore, we recommend ‘Baeyoen No.1’ as a rootstock against some physiological disorders.