CAJ | 학술논문

为研究桔红肉甘薯在块根膨大过程中鲜薯主要品质性状的变化动态及其相关性。于栽插后40、70、100和125 d等4个时期分别挖根取样，测定鲜薯β－胡萝卜素、铁、锌、淀粉、蔗糖、果糖和葡萄糖含量，并分析其相互关系。β－胡萝卜素含量在整个生育期表现出“升高－降低”的单峰波动曲线；蛋白质含量的变化趋势为“下降－升高”；淀粉含量的变化动态与β－胡萝卜素相似，只是波动趋势较平缓；糖类物质的变化曲线与淀粉正好相反，表现出“降低－升高”的波动趋势；铁元素含量一直在降低，先是快速下降，然后缓慢下降；而锌元素含量则是直线下降。鲜薯蔗糖含量与β－胡萝卜素含量极显著负相关，与果糖含量显著正相关；淀粉含量与果糖含量极显著负相关，与锌元素含量显著正相关。
위연구길홍육감서재괴근팽대과정중선서주요품질성상적변화동태급기상관성。우재삽후40、70、100화125 d등4개시기분별알근취양，측정선서β－호라복소、철、자、정분、자당、과당화포도당함량，병분석기상호관계。β－호라복소함량재정개생육기표현출“승고－강저”적단봉파동곡선；단백질함량적변화추세위“하강－승고”；정분함량적변화동태여β－호라복소상사，지시파동추세교평완；당류물질적변화곡선여정분정호상반，표현출“강저－승고”적파동추세；철원소함량일직재강저，선시쾌속하강，연후완만하강；이자원소함량칙시직선하강。선서자당함량여β－호라복소함량겁현저부상관，여과당함량현저정상관；정분함량여과당함량겁현저부상관，여자원소함량현저정상관。
In order to study the variation dynamics and mutual relationships of main quality traits of fresh tubers of orange -flesh sweet potato [Ipomoea batatas (L.) Lam] in expanding process, the author respectively sampled the fresh tubers on the 40th, 70th, 100th, and 125th day after transplanting , determined the contents of β-carotene, Fe, Zn, starch, sucrose, fructose and glucose in these tubers , and analyzed the mutual relationships among these nutrients .Theβ-carotene content in the whole growth period increased firstly and then decreased .The variation of protein content showed the tendency of “decreasing-rising”.The vari-ation dynamic of starch content was similar to that of β-carotene content , while its fluctuation was gentler .The changing curve of carbohydrate content was opposite to that of starch content , showing decreasing firstly and then rising .The Fe content decreased rap-idly at first and then reduced slowly .The Zn content was plummeting .The sucrose content in fresh tubers had very significantly neg-ative correlation with β-carotene content , and had significantly positive correlation with fructose content .The starch content had very significantly negative correlation with fructose content , and had significantly positive correlation with Zn content .