ISSN 2167-0447
International Journal of Agricultural Sciences ISSN: 2167-0447 Vol. 4 (5), pp. 190-195, May, 2014. © International Scholars Journals
Full Length Research Paper
Stability of cassava promising varieties for high tuber and ethanol yield using Ammi model
Sholihin Iletri
Indonesian Legumes and Tuber Crops Research Institute, Malang, Jl. Raya Kendalpayak P.O. box 66, Malang.
E-mail: [email protected] Tel: 0341-801468: fax number 0341-801496
accepted 3, February 2014
Abstract
An experiment to evaluate the stability of cassava promising varieties for high tuber and ethanol yield using Ammi Model was done during 2007/2008 and 2009 seasons in Lumajang and Banyuwangi (East Java), Lampung Selatan (Lampung), Lampung Timur (Lampung) and Lampung Tengah (Lampung). The experiments were laid down in a RCB Design with three replications. The plot size was a 5 m x 5 m. Plants were spaced 100 cm x 80 cm and fertilizer rates 93 kg N+ 36 kg P2O5 + 60kg K2O/ha were used. The clones tested were CMM 99008-3, OMM 9908-4, OMM 9904-70, CMM 99023-12, OMM 9904-111, CMM 99023-4 and MLG 10311 as promising clones with Adira 4 and UJ5 (released varieties) as checks. Fresh tuber yield (t/ha) of nine months old plants were collected. Based on stability analysis of AMMI model, the study showed that, CMM 99008-3, OMM 9908-4, OMM 9904-70, CMM 99023-4, UJ5, MLG 10311 and Adira 4 were stable clones while CMM 99023-12, OMM 9904-111, were not. The mean of the fresh tuber yield of OMM 9908-4 over locations and years was the highest (42,223 t/ha), 15 % higher than UJ5 /Kasetsart 50), equal to Rp 4.460.800,-/ha or around US $ 496. The yield potential of ethanol of OMM 9908-4 was 14472 liter/ha.
Key words: Cassava, fresh tuber yield, stability, promising clone, high yield, ethanol.