The characteristic study and breeding of new wheat variety quot; yannong 23 quot 烟农23小麦新品种的选育及其特性研究
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The characteristic analysis and breeding of new wheat variety quot; yannong 24 quot 烟农24号小麦新品种的选育及其特性分析
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Three wheat cultivars , yannong 19 ( with spread plant type ) , jimai 20 ( with semi - spread plant type ) and taishan 23 ( with erect plant type ) , were used to investigate the wue ( water use efficiency ) change under raised bed planting with furrow irrigation and conventional flat planting with flood irrigation 摘要为寻找提高小麦水分利用效率的途径，以株型扩张品种烟农19 、株型紧凑品种泰山23和株型半扩张品种济麦20为材料，比较研究了垄作（小水沟内渗灌）和平作（大水漫灌）两种栽培模式下小麦的水分利用效率。
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Seventy - nine improved wheat cultivars ( lines ) including some related parents were corssed with rye to detect the difference of crossability among wheat genotypes and the developing tendency of crossability during the cultivar renewing period in shandong province , the results expressed that crossability of improved cultivars with rye were significantly lower than that of the check ( chinese spring ) , and there were 3 cultivars with a seedset of more than 50 % , 4 cultivars with the seed - set of 30 % - 50 % , 8 ones with that of 10 % - 30 % , 50 ones with the seed - set of less than 5 % , and the other 14 cultivars with the seed - set of 5 % - 10 % ; the mean crossability between wheat and rye decreased with the renewing of cultivars in shandong , and the number of cultivars with the seed - set of more than 50 % and 30 % - 50 % also decreased , but that with the seed - set of less than 5 % increased gradually during the renewing period ; pedigree analysis revealed that the crossable gene of the tested cultivars might come from 3 landraces ( youzimai , mazhamai and huixianhong ) , laizhou 953 , 8641012 , yannong 15 et al were improved wheat cultivars with both excellent agronomic traits and high crossability with rye 以79个改良小麦品种(系)与黑麦进行杂交，研究普通小麦品种与黑麦杂交亲和性的差异及其亲和性在品种更新、更换过程中的演变趋势，结果表明：供试改良小麦品种与黑麦的杂交亲和性显著低于对照中国春；结实率大于50 %的品种3个，占供试品种的3 . 8 % ，结实率介于30 % - 50 %之间的品种4个，占5 . 1 % ，结实率介于10 % - 30 %之间的品种8个( 10 . 1 % ) ，结实率小于5 %的品种50个，占63 . 3 % ，另外，结实率介于5 % - 10 %之间的品种14个，占17 . 7 % ;普通小麦与黑麦的杂交亲和性随着品种的更新、更换呈下降趋势，平均结实率大于50 % 、介于30 % - 50 %的品种数均呈下降趋势，而结实率5 %的品种数呈上升趋势；系谱分析表明，供试改良品种的亲和性大都来源自蚰子麦、蚂蚱麦、辉县红3个地方普通小麦品种；莱州953 、 8641012 、烟农15等是亲和性和综合性状都较好的改良小麦品种(系) 。
