Utomo, Setyo Dwi and Yuliadi, Erwin and Edy, Akari and Usodri, Kresna and Jumadi, Muhammad and Pratiwy, Vetty (2018) Diversity of flowering, morphological and agronomic characters of cassava clones in Lampung, Sumatra. In: International Conference on Biodiversity Solo 7- April 2018, April 7 - 8, 2018, Solo, Central Java. (Unpublished)

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Abstract

AO-05 Diversity of flowering, morphological and agronomic characters of cassava clones in Lampung, Sumatra Setyo Dwi Utomo♥, Erwin Yuliadi, Akari Edy, Kresna Shifa Usodri, Muhammad Jumadi, Vetty Pratiwy Faculty of Agriculture, Universitas Lampung. Jl. Sumantri Brodjonegoro No. 1, Bandar Lampung 35145, Lampung, Indonesia To develop superior cultivars/clones of cassava (Manihot esculenta), sexual hybridization is required to generate highly diverse population. The objectives of this study were (i) to evaluate the the variation in flowering of cassava clones as parents; and (ii) to evaluate the variation in growth rate and morphology of F1half-sib population. Random natural sexual hybridization of 40 cassava clones was conducted in highland of Sekincau (1136 m asl), West Lampung in 2015-2017. At 6 months after planting, reproductive branches, flowers, and fruits were observed in all clones; the lowest percentage of plants producing reproductive branches, flowers, and fruits were 32%, 20%, and 12.5% respectively. This demonstrated that sexual hybridization among cassava clones should be effective in highland Sekincau. The harvested botanical seeds were germinated and grown on soil media (10 kg polybag) on 12 December 2015; ≤20 seeds derived from female parent per polybag. Growth rate is the number of seeds growing divided by the number of seeds planted; observed at 12 days after planting. The growth rate of F1 seed harvested from 81 clones was 58% and tend to increase when the seeds were planted after 87 days after harvesting. The stem cutting from the seedling of F1 seed were planted in unreplicated experiment Bandar Lampung from April 2016 to March 2017. The degree of variation of was estimated on eight F1 half-sib populations. The color of apical leaves, abaxial petiole color, and adaxial petiole color showed mostly high degree of variation in five F1 half-sib population. The characters number of leaf lobes, length of leaf lobe, width of leaf lobe, ratio of lobe length to lobe width of central lobe, and petiole length showed high degree of variation in eight F1 population. The degree of variation of starch rendement was high in F1 population derived from BL 5-1, CMM 25-27-145, and Mulyo. Selection for starch rendement in the three population should be effective in the three populations. Botanical seeds, diversity, growth rate, Manihot esculenta, sexual hybridization

Item Type: Conference or Workshop Item (Paper)
Subjects: S Agriculture > SB Plant culture
Divisions: Fakultas Pertanian (FP) > Prodi Agronomi dan Hortikultura
Depositing User: Prof. Setyo Utomo
Date Deposited: 28 Jun 2018 02:02
Last Modified: 28 Jun 2018 02:02
URI: http://repository.lppm.unila.ac.id/id/eprint/7995

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