CAJ | 학술논문

鉴定筛选苗期抗旱绿豆种质，对改良绿豆品种抗旱性、促进绿豆产业发展具有重要意义，同时，也为“绿豆抗旱性鉴定评价技术规范”的制定提供方法和信息支撑。本研究以70份绿豆种质为材料，采用苗期反复干旱法，测定幼苗存活率、萎蔫指数、株高、叶片鲜重、叶片干重、叶片含水量、生物量和胁迫指数等指标，分析各指标间的相关性，结果显示第1次旱胁迫后的幼苗存活率与第2次旱胁迫后的幼苗存活率呈极显著正相关；萎蔫指数、株高与幼苗存活率呈极显著负相关，故遴选出第1次旱胁迫幼苗存活率、萎蔫指数和株高为绿豆苗期抗旱性评价的适宜指标。采用隶属函数法，综合分析划级，获得高抗旱种质16份、抗旱种质20份，中抗种质23份、敏感种质8份和极敏感种质3份。以第1次旱胁迫幼苗存活率、萎蔫指数和胁迫株高分别评价绿豆的抗旱性并与综合评价结果相比较，一致率分别为70.0%、58.6%和51.4%。认为第1次旱胁迫幼苗存活率可以作为大规模绿豆种质苗期抗旱筛选的鉴定指标。
감정사선묘기항한록두충질，대개량록두품충항한성、촉진록두산업발전구유중요의의，동시，야위“록두항한성감정평개기술규범”적제정제공방법화신식지탱。본연구이70빈록두충질위재료，채용묘기반복간한법，측정유묘존활솔、위언지수、주고、협편선중、협편간중、협편함수량、생물량화협박지수등지표，분석각지표간적상관성，결과현시제1차한협박후적유묘존활솔여제2차한협박후적유묘존활솔정겁현저정상관；위언지수、주고여유묘존활솔정겁현저부상관，고린선출제1차한협박유묘존활솔、위언지수화주고위록두묘기항한성평개적괄의지표。채용대속함수법，종합분석화급，획득고항한충질16빈、항한충질20빈，중항충질23빈、민감충질8빈화겁민감충질3빈。이제1차한협박유묘존활솔、위언지수화협박주고분별평개록두적항한성병여종합평개결과상비교，일치솔분별위70.0%、58.6%화51.4%。인위제1차한협박유묘존활솔가이작위대규모록두충질묘기항한사선적감정지표。
It is significant to identify and screen drought resistant mungbean germplasm resources at seedling stage for mungbean cultivars improvement and production in China, at the same time, which could provide some reference methods and basic infor-mation for developing “the technical specification of identification and evaluation for drought resistance in mungbean”. The indi-ces including survival rate of seedlings, wilt index, plant height, weight of fresh and dry leaf, relative water content, biomass weight and stress index were measured with the method of repeat drought stress in 70 accessions of mungbean resources. The survival rate of seedlings had significantly positive correlation between the first and the second drought stress, both wilt index and plant height had significantly negative correlation with survival rate. The survival rate of seedling under the first drought stress, wilt index and plant height were selected as suitable indices for drought resistance identification and evaluation based on correla-tion analysis. The various resistant accessions of mungbean germplasm resources screened by subordinative function analysis included 16 highly resistant, 20 resistant, 23 moderately resistant, eight susceptible and three highly susceptible. The drought re-sistance was evaluated based on the survival rate of seedling under the first drought stress, wilt index and plant height with the concordance rate of 70.0%, 58.6%, and 51.4% respectively as compared to the comprehensive evaluation. The survival rate of seedling under the first drought stress was recommended as a drought resistance index in screening a large number of germplasm resources ofmungbean.