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Presented at an internal seminar held in Plant Breeding Laboratory Universitas Brawijaya, Malang, 8 December 2015ADDITIVE MAIN EFFECTS AND MULTIPLICATIVE INTERACTION (AMMI) BIPLOT ANALYSIS FOR MATCHING LOCAL VARIETIES SWEETPOTATO YIELD ON TO CLIMATE CHANGE CHALLANGEBudi Waluyocontact : budiwaluyo@ub.ac.id

UNIVERSITAS BRAWIJAYA - FACULTY OF AGRICULTURELABORATORY OF PLANT BREEDING

INTRODUCTIONSweet potato is an potential comodity for food, feed, industry, and bioethanol raw materialTargeting sweetpotato local varieties selection onto environmental change is the interest of any plant-breeding program to matching yield production

AMMI biplot was simpler and informatif geometry for producing graphical visualizations of patterns in yield-trial data, can capture substantially more variation. AMMI biplot displays genotype (G) main effects, environment (E) main effects, and genotype environment (GE) interaction eff ects of interest to crop scientists and soil scientists would need another biplot

METHOD

Study of genotype x environment interactions and to obtain local varieties widely adapted or adapted to specific environment conducted at Kebun Percobaan Fakultas Pertanian Universitas Padjadjaran. Period of research in January 2011 - June 2011, July 2011 - December 2011, April 2012 - September 2012, July 2012 - December 2012, and September 2012 February 2013

A randomized complete block design with two replicates over five times planting were employed with 33 local varieties as treatments. Combined of Anova integrated with AMMI was applied to detect the genotype x environment interaction, to estimated genetic parameter, and determine adaptation and yield stability.

RESULT : Integrated Combined analysis of variance and AMMI

SourcedfYield (t/ha)MS(%) Total(%) GESeason41815.2**32.0Block(Season)52.3Varieties32268.91**38.0Varieties x Season12846.57**26.3 Component AMMI 13585.81**50.4 Component AMMI 23359.4**32.9 Component AMMI 33125.1**13.0Error297.593.7Residual1605.223.7Total32968.92KK (%)26.61

Table 1. Genetic parameters of YieldParametersTraitYield (t/ha)Var g22.23Var f27.45Var gm20.68Var e5.22KKG54.9%KKF61.0%KKGM53.0%SE var g20.71CriteriabroadSE var f9.53CriteriabroadH0.81Criteriahigh

Table 2. Tuber yield (t/ha) of 33 local varieties over planting 2011 2013Local VarietiesSeason 1Season 2Season 3Season 4Season 5AverageBagolo2,8d2,3b9,2d10,2e7,6d6,4Eno8,5c5,9a4,8d24,1c15,6c11,8Ganola8,5c6,7a18,0b20,5d7,4d12,2Jawer Kotok116,0a5,5a21,5b24,4c18,4b17,2Jawer Kotok216,6a8,5a20,3b23,5c29,4a19,7Menes Gedang9,0c1,8b5,5d20,9d4,8d8,4Menes019,0c2,4b7,0d17,2d8,6d8,8Nirkum028,0c4,3a1,5e2,1f0,8e3,3Nirkum037,0c4,5a5,3d13,1e3,6e6,7Nirkum060,6d0,9b2,0e17,2d1,2e4,4Nirkum084,6d3,0b2,2e7,2f8,8d5,2Nirkum096,6c4,4a3,7e16,3d1,6e6,5Nirkum1210,5b2,2b6,8d18,6d2,4e8,1Nirkum136,5c3,0b6,0d17,4d5,0d7,6Nirkum141,7d1,7b0,2e14,8e1,1e3,9Nirkum161,5d0,4b3,3e2,8f1,0e1,8Nirkum1810,0b1,5b3,0e22,1c2,8e7,9Nirkum197,8c3,6b0,5e17,7d0,8e6,1Nirkum206,8c3,2b7,7d11,6e5,4d6,9Nirkum215,3c2,1b1,7e23,4c9,8d8,5Nirkum2210,0b4,9a0,6e35,2b4,6d11,1Nirkum235,5c1,5b0,3e1,3f1,0e1,9Nirkum244,5d2,7b2,0e18,2d1,8e5,8Nirkum256,4c3,7b1,7e11,1e1,0e4,8Nirkum268,5c2,1b8,0d13,2e1,4e6,6Nirkum275,2c1,7b8,2d14,8e1,4e6,3Menes NK13,3a4,5a1,2e23,6c1,4e8,8Nirkum295,6c0,2b9,0d4,1f2,2e4,2Nirkum316,8c1,9b2,3e9,5e3,0e4,7Odos8,0c2,6b3,0e26,9c14,7c11,0Rancing13,5a6,4a28,0a48,2a26,0a24,4Rancung0111,5b9,3a13,0c20,9d20,6b15,1Rancung0211,2b6,7a19,3b24,7c25,0a17,4Average7,803,516,8717,477,288,6

Tuber yield stable over planting 2011 2013 : Variety Menes 01, Nirkum 13, and Nirkum 27

CONCLUSIONYield of local varieties of sweet potatoes is influenced by genotype x environment interactionsThere are three local varieties that have a phenotypicaly stable in tuber yield, i.e. variety Menes 01, Nirkum13, and Nirkum27

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