Department of Genetics, La Trobe University, Bundoora, Australia.
Theor Appl Genet. 1970 Jan;40(6):261-6. doi: 10.1007/BF00282036.
Strains set up from single inseminated females of D. melanogaster derived from two wild populations have been shown to differ in their ability to withstand dessication, as measured by mortalities after 16 hours in a dry environment, thus there are genes segregating in wild populations for ability to withstand dessication. A more detailed study on strains from one of the wild populations, showed that strains with high wet and dry weights lose water by dessication relatively less rapidly and have lower mortalities, than strains with lower wet and dry weights.Variability within and between five inbred strains was studied with results as above. Heritabilities for wet weight, dry weight, and mortality were 0.40, 0.41 and 0.60 respectively, showing the likelihood that the traits would be amenable to further genetic analysis.The relevance of the results are discussed in relation to stress to high temperatures, and the ecology of the species in general.
从两个野生种群中单一授精的雌性果蝇中建立的品系在干燥环境中 16 小时后的死亡率方面表现出对干燥的耐受性不同，因此在野生种群中有分离的基因用于耐受干燥。对来自一个野生种群的品系进行的更详细的研究表明，湿重和干重较高的品系通过干燥失去水分的速度相对较慢，死亡率较低，而湿重和干重较低的品系则死亡率较高。上述结果研究了五个近交系内和系间的变异性。湿重、干重和死亡率的遗传力分别为 0.40、0.41 和 0.60，表明这些性状很可能进一步进行遗传分析。讨论了结果与高温胁迫以及该物种的一般生态学的相关性。
