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      Keragaman genetik klon-klon karet (Hevea brasiliensis Muell. Arg) yang resisten dan rentan terhadap Corynespora casiicola berdasarkan penanda RAPD dan AFLP

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      Menara_Perkebunan_Genetic_Diversity_of_Leaf_Fall_Disease_Resistance_&_Susceptible_Clone_of_Rubber.pdf (254.8Kb)
      Date
      2002
      Author
      Toruanmathius, Nurita
      Zulkifli, Lalu
      Sudarsono
      Aswidinnoor, Hajrial
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      Abstract
      Corynespora leaf fall disease (CFLD) caused by the fungus Corynespora casiicola is one of the most important diseases of Hevea brasiliensis.CFLD was reported to cause serious damage on rubber productivity, and the disease has became more apparent in the recent years. The objectives of this study were (i) to analyze genetic similarities among several rubber clones resistance and susceptible to CFLD based on RAPD and AFLP markers, (ii) to compare the effectiveness of RAPD and AFLP markers. DNA genomic was extracted from young leaves of RRIM600, GT1, PB260, RRIC100, BPM1 (belongs to resistance group), PPN2058, PPN2444, and PPN2447 (belongs to susceptible group). Data were analyzed with NTSYS-pc program version 2.10, and a dendogram was created by cluster analysis using the unweighted pair group method on the basis of arithmetic averages (UPGMA). The results show that marker index AFLP (3.57) is higher than RAPD (1.02), it means that AFLP is more effective compared to RAPD. The average of genetic similarity AFLP (0.63) lower than RAPD (0.67) it means that AFLP is more discriminative than RAPD. Dendogram based on AFLP and RAPD were the best with at 0.65 level of genetic similarity cluster divided into two cluster A and B. Cluster A with a sub group A1 consisted of RRIC100, PPN2058 and PPN244 are belongs to resistance group), and sub group A2 consisted of (RRIM600, GT1, BPM1 and PB 260 are belongs to susceptible group), while cluster B only PPN2447 is belong to susceptible group. AFLP analysis show that one AFLP band of 110 bp resulting from PCR amplification using E-ACA/M-CAG (E-ACA/M-CAG110) primer pairs present in resistance clones, but absent in the susceptible clones. Meanwhile, application of 50 random primers decamer in RAPD analysis did not showed the specific band for either one of the group. It is concluded that AFLP marker analysis using EACA/M-CAG primer pair have a potential to differentiate resistance and the susceptible rubber clones to Corynespora. For the confirmation of the results more resistance and susceptible clones are needed for further test.
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      http://repository.ipb.ac.id/handle/123456789/26260
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      • Agronomy and Horticulture [603]

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