UJI LAPANG KETAHANAN HIBRIDA KAKAO TERHADAP PENYAKIT BUSUK BUAH (Phytophthora palmivora Butler)

Rubiyol, Rubiyol and Iswanto, Arief and Sukamto, Sri (2010) UJI LAPANG KETAHANAN HIBRIDA KAKAO TERHADAP PENYAKIT BUSUK BUAH (Phytophthora palmivora Butler). Jurnal Stigma, 8 (1). pp. 57-59. ISSN 0853-3776

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Abstract

An experiment to study the resistance of cocoa hybrids on black spod disease ( Phytophthora palmivora) was conducted at Kottablater Plantation XXIII Jember East Java in 1997 ta 1998. The method in this experiment was Completely Randomeced block Design with eleven treatments and three replications. Ten hybrids tested were: Nic 7 x Sca 6, Nic 7 x Sca 8, Nic 7 x Sca 12, Nic 7 x Sca 89n Nic 7 x lcs 95, Nic 7 x IJF 221, NW 6261 x Sca 6, NW 6261x Sca 8, NW 6261 x Sca 12, DR I x IMC 67 and DR 2 as the control. The spot development and invasion persentage of P,palmivora were the basis for their resistant level. The results of this experiment were: Nic 7 x Sca 89 and NW 6261 x Sca 12 hybrids revealed that their resistance level was better than DR 2, whereas Nic 7 x lcs 95 was more susceptible than DR 2.

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