三对性杂种

While doing the RFLP tagging of giant embryogene,the genome changebetween mutants and its original parent,the relationship between RFLP andheteroses in indica,japonica and intermediate rice,the performance of multipleand null allelism in rice varieties,the utilization of null allelic RFLP probes inidentifying indica and japonica rice specifically,the distribution of the nullallelic RFLP probe RG684 in rice cultivars,and the segregations of RFLPmakers in indica/japonica F2 population were also studied.

本实验从经典遗传、分子遗传、育种潜力评估、育种新品系选育等领域，对巨大胚、甜胚乳、暗胚乳三种新型突变体进行了全面系统研究。在对巨大胚进行分子定位过程中，对涉及到的突变体与原始亲本基因组变化，籼、粳、中间型材料的RFLP多态性与杂种优势之间关系，水稻品种的复等位、零等位表现，鉴定籼、粳特异性的零等位RFLP标记，零等位标记RG684在稻种中分布，RFLP标记在籼粳交F2群体中分离等遗传现象也一并进行了分析。

The trigerieric hybrid involving Triticum, Leymus and Thinopyrum has been created by the cross between Octoploid Tritileymus and Octoploid Tritithinopyrum, and the morphology, fertility and cytology of the F1 hybrids was studied.

利用八倍体小滨麦和八倍体小偃麦杂交，创制出小麦－滨麦－偃麦草三属杂种，对杂种F1进行了形态学、育性和细胞学分析。

The drought resistance of Chinese Wild Vitis species was studied by shape index, relative water content, and relative plasma permeability under the conditions of drought stress, and evaluated by subordinative function.

本研究以中国葡萄属野生种8个种11个株系，欧洲葡萄2个品种，河岸葡萄及燕山—1×河岸葡萄107株F_1代杂种共122份材料为试材，调查了盆栽干旱胁迫条件下叶片的形态变化指标，测定了相对含水量和细胞膜相对透性两项指标；以隶属函数法为手段处理这三项指标，对供试的葡萄属植物的抗旱性进行了综合评价。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。