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 Wysłany: Czw 23:12, 31 Mar 2011 Temat postu: Gold pine karyotype of _424 |
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Gold karyotype of Pinus
___L___Lr. . Lr. I. . I, ●. . . . Lr. . . -__L 【 【 Jul text of a statement Shan et al: Jiang received the money , then chromosome studies prepared with a new fixative (methanol : acetic acid: 2:1 ) fixed 12 ~ 24b, in 60C temperatures with 1NHCI hydrolysis 5 ~ 8rain, After washing stained with modified carbol fuchsin dye , tablet , microscopic examination , for staining . 5 deletion and computing the actual length of the chromosome , the relative length and arm ratio of chromosome formula by Levan [ such standards. 2 Results and discussion producer under observation and a lot of counting to determine the chromosome number of loose money, 2n = 44. This is the same as the findings of Huang Shaofu other chromosome morphology and the money loose edge type shown in Figure 1 , Figure 2, edge -type analysis in Table 1 and other chromosome classification according to Levan , money cypress stained Xing karyotype formula was K (2n) = 44:24 m (M) ten 16sm = 4st. Figure 2, Figure 3 shows , with 22 pairs of loose money long staining Xing (14.49 ~ 30.27um), the longest chromosome to the shortest ratio of 2.09:1 . The total length of chromosome 450.38m. 2,[link widoczny dla zalogowanych],5 Department of proximal first metacentric chromosome . No. 1,3,6,10,11,16, i7, 20 pair is nearly metacentric chromosome, the rest of l2 of the metacentric chromosomes. Range of variation of chromosome arm ratio is 1. O0 ~ 5.24. By Arano5 the edge asymmetry coefficient ( the long arm length / genome length ) is calculated , AK% to 63.92 . According to Stebbins karyotype asymmetry type J, the money song is
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