黑龙江省大豆近期区试品种蛋白质和脂肪含量的分析

根据黑龙江省大豆品种区域试验3个试点15个参试品种的蛋白质和脂肪含量的测定结果,研究了各性状的品种(基因型)、地点、品种×地点互作效应相对变异。结果表明,蛋白质含量、脂肪含量和蛋白脂肪总含量在品种间、地点环境间均存在极显著差异,而且存在品种×地点交互作用。蛋白质含量以品种效应的相对变异最大,脂肪含量以品种×地点交互作用的相对变异最大,蛋白脂肪总含量的各效应中以地点效应的相对变异最大。将品种×地点互作效应分解为各参试品种的品种×地点互作效应发现,参试品种的蛋白质含量和脂肪含量均存在品种×地点互作效应,并且有些品种的互作效应较大。     

Interactions between isolates of Puccinia smyrnii, an autoecious, demicyclic rust and accessions of Smyrnium olusatrum

Plants derived from bulked seed samples of Smyrnium olusatrum collected from small patches of plants in Anglesey, Gwynedd, Shropshire and Suffolk were all susceptible, but expressed quantitative differences in disease severity, when inoculated with either aeciospores or teliospores of Puccinia smyrnii from the same or similar locations under controlled environmental conditions. Latent periods (mean 16 and 11 days for appearance of telia and spermagonia, respectively) were longer in 1996 compared with repeat inoculation in 1997 when the rust was more severe. Summation of mean numbers for each year of both aecia and telia, for rust isolate × host accession combinations, showed significantly different numbers of aecia in both years but not of telia. Incidence and severity of P. smyrnii varied on plants derived from seed from Anglesey, Shropshire and Suffolk when transplanted into a naturally rust-affected population of S. olusatrum at Gwynedd, but all plants were susceptible. Experimental transfer of spermatia between spermagonia confirmed that P. smyrnii is heterothallic.