Interspecific hybrids are obtained by fusing two different cell types from the one species . 種內的雜種細胞是通過同一物種兩種不同類型細胞融合而得的。
The two authors concluded that these intraspecific differences can be greater than those among the calciphytes and oxylophytes . 這二位作者得出結論說,這些種內的差別能比喜鈣植物和喜酸植物之間的差別大。
Both oxyopes sertatus and harpactor fuscipes are important predators of common cutworm ( spodoptera litura ) on tobacco . the effect of several interference factors on the predations of o . sertatus and h . fuscipes on the larvae of s . litura were examined in laboratory . the results indicated that there were significant mutual interferences on their predations with the existence of other individual in the same / different species . as the number of the predator increased , the predation rates decreased significantly . the interference coefficients ( m ) within h . fuscipes and within o . sertatus were 0 . 7278 and 0 . 6911 , respectively , while the interference coefficient ( m ) between o . sertatus and h . fuscipes was 0 . 9464 . these results showed that the effect of mutual interference on predation in interspecies was more obvious than that in intraspecies . the number of prey captured and the predation rate of predator dropped with increasing the number of tobacco stalks . this result suggested that spatial heterogeneity was also an important factor affecting the predation of predator on prey 斜紋貓蛛和紅彩真獵蝽均是煙草上斜紋夜蛾的重要捕食性天敵.室內測定幾種干擾因素對斜紋貓蛛和紅彩真獵蝽捕食作用的影響,結果表明這些干擾因素對斜紋貓蛛種內、紅彩真獵蝽種內和兩種捕食者種間的捕食作用均有明顯的干擾作用,隨捕食者數量的增加,其對斜紋夜蛾捕食作用率顯著降低.斜紋貓蛛種內的干擾系數和紅彩真獵蝽種內的干擾系數分別為0 . 7278和0 . 6911 ,而兩者種間的干擾系數為0 . 9464 ,說明兩者種間的干擾作用要明顯高于同一種捕食者種內的干擾作用.兩種捕食性天敵對斜紋夜蛾的捕食量和捕食作用率隨煙草莖桿數的增加而降低,表明空間異質性同樣是影響兩種捕食性天敵捕食作用的一個重要因素
Biodiversity in addition has become a hot point of recent study . many researches on species diversity of mains millerwere reported , the studies on genetic diversity were rarely reported , especially for the species such as malus toringoides hughes , which is rich in morphological and genetic diversity 遺傳多樣性和生態環境多樣性、景觀多樣性和人文多樣性等幾個方面,而蘋果屬植物物種多樣性的研究比較多,但種內的多樣性及其類型分化的研究少有報道,對于形態和遺傳物質多樣性都相當豐富的變葉海棠更是如此。
Samples was only 0 . 37 which was the smallest among coefficients ; tl , t2 , t3 and t4 which came from gaozhuang plantation , mianyang , sichuan , and t5 , t6 , t7 , which came from laohegou planation , mianyang , sichuan , were clustered two groups . the greatly genetic variations in samples of gastrodia elata bl . in different areas and altitude were revealed though the analysis of the tree plot 從總體上看,采自高莊林場的n , t2 , t3 , t4和老河溝采育場的t5 , t6 , t7及采自雅安地區的t9 , t8可以聚為兩大類,說明由于地理分布和海拔高度的不同,天麻種內的dna存在較大的變異性。