以乌兰格木为母本的中蒙沙棘杂种F_1表型性状分离规律研究  

Phenotypic Diversity of Hybrids Progenies of H.rhamnoides subsp. mongolica×H.rhamnoides subsp. Sinensis for Multipurpose Use

作　　者：段爱国[1] 张建国[1] 罗红梅[2] 李健雄[2] 

机构地区：[1]中国林业科学研究院林业研究所国家林业局林木培育重点实验室,北京100091 [2]中国林业科学研究院磴口沙漠林业实验中心,内蒙古磴口015200

出　　处：《国际沙棘研究与开发》2011年第4期24-29,共6页

基　　金：中国林业科学研究院林业研究所重点项目"沙棘生态经济型优良杂种选育与示范"(ZD200904);科技部农业科技成果转化资金项目"大果沙棘优良引进品种产业化示范(2009GB24320470)"资助

摘　　要：基于远缘杂交技术路线,以引进的蒙古大果沙棘乌兰格木实生子代优株为母本,中国沙棘优良种源丰宁的优良单株为父本,开展了蒙古沙棘与中国沙棘两个亚种间杂交育种工作,对杂种F1表型性状分离规律进行了研究。发现杂种F1代性状分化严重,棘刺数、生长量、叶片、果实等性状的变异程度依次降低,以蒙古大果沙棘为母本的中蒙沙棘杂交能使F1代在株高、棘刺数两个性状上取得最为显著的改良效果。F1代群体雌雄比符合1∶1自由组合规律,红果型、杂种F1代果蝇危害率差异以及在重要选种性状上的超亲现象的存在,为沙棘良种选育提供了理论与物质基础。In order to improve seabuckthom for both economic value and ecological adaptability, Mon- golian Seabuckthom （H. rhamnoides subsp, rnongolica） as female parent was crossed with Chinese Seabuckthorn （H. rhamnoides ssp. Sinensis） as male parent. Crossbreeding trial was started in 1994. It was found that the phenotypic variations of hybrids progenies were obvious. The variation coefficients of numbers of thorns, growth indices, leaves attributes and fruits attibutes were found decreasing in turn. Through crossing, F1 groups had obtained the most significant improvement effects in the attributes of stem height and numbers of thorns. The ratio of female to male was tested to be in accordance with law of independent assortment, 1 ＂ 1 proportion. The existences of red fruits, harmness difference of fruit fly and transgressive phenomenon in some important seed-selection attributes, could provide theoretical and material basis for breeding of good cultivars of seabuckthorn.

关 键 词：沙棘 蒙古沙棘 中国沙棘 杂交育种 表型变异 

分 类 号：S793.623.1[农业科学—林木遗传育种]