产地及籽粒外观品质对芝麻木酚素含量的影响

摘要

The purpose of this study was to investigate the effects of producing area and appearance quality on lignan contents of sesame seeds to provide a theoretical basis for genetic improvement of sesame seed quality and producing sesame production with high lignan content. Two hundred and twelve typical sesame cultivars/lines,cho-sen from more than 3 800 accessions of sesame germplasm resources,were simultaneously grown in 4 different eco-logical zones. And the sesamin,sesamolin content,kilo-seed weight and seed-coat color of the 212 seed samples yiel-ded in each area were measured. And the relationships between sesamin and sesamolin content with producing area, kilo-seed weight and seed coat color were analyzed. The average contents of sesamin and sesamolin of four producing areas were 3. 52,3. 61,3. 11,2. 43,1. 94,1. 93,1. 78,1. 62 mg/g,respectively. There exists the tendency of in-creasing lignan contents of sesame seeds with the rising of yielding area latitudes. Furthermore,an extremely signifi-cantly positive correlation was found between seed-coat color L value and sesamin contents(r=0. 296 6,a=0. 01) and no significant correlation was found between seed-coat color L value and sesamolin;an extremely significantly negative correlation was found between kilo-seed weight and sesamin contents(r= -0. 260 3,a=0. 01)and a sig-nificantly positive correlation was found between kilo-seed weight and sesamolin contents(r=0. 227 9,a =0. 01). The sesamin and sesamolin contents rose gradually with the increase of yielding area latitudes. With the darkening of the seed-coat color from white to black,sesamin content was gradually increased. With the increasing of kilo-seed weight,the sesamin content was gradually decreased,and the sesamolin content gradually increased.%为了研究产地及籽粒外观对芝麻木酚素含量的影响，为芝麻品质遗传改良及高木酚素芝麻商品生产提供理论依据。从3800余份芝麻种质资源中选取212份代表性资源，分别在4个不同生态区种植，测定各样品芝麻素和芝麻林素含量；探讨芝麻不同产地、千粒质量及种皮颜色与芝麻素和芝麻林素含量的关系。结果表明，芝麻素和芝麻林素各试点含量均值分别为3.52，3.61，3.11，2.43，1.94，1.93，1.78，1.62 mg/g；芝麻木酚素含量存在随纬度升高而增加的趋势；芝麻籽粒颜色 L值与芝麻素含量极显著正相关（r=0.2966，a=0.01），与芝麻林素含量相关不显著；千粒质量与芝麻素含量极显著负相关（r=-0.2603，a=0.01），与芝麻林素含量极显著正相关（r =0.2279，a=0.01）。芝麻素和芝麻林素含量随产地纬度的升高而增加；随着种皮颜色变深，芝麻素含量逐渐降低；随着千粒质量增加，芝麻素含量逐渐降低，芝麻林素含量不断增加。