Growth and productivity of potato as influenced by cultivar and reproductive growth: II. Growth analysis,tuber yield and quality |
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| Institution: | 1. Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand;2. Peanut and Jerusalem Artichoke Improvement for Functional Food Research Group, Khon Kaen University, Khon Kaen, Thailand;1. Litani River Basin Management Support (LRBMS) Program, Bechara El Khoury Street, Ghannajeh Building, 5th Floor, P.O. Box 11 3732, Beirut, Lebanon;2. Litani River Authority, Department of Environment, Bechara El Khoury Street, Ghannajeh Building, 5th Floor, P.O. Box 11 3732, Beirut, Lebanon;3. International Center for Higher Mediterranean Agricultural Studies, Via Ceglie 9, 70010 Valenzano, Bari, Italy;4. Università degli studi di Firenze, Dipartimento di Economia Agraria (DEART), Piazzale delle Cascine 18, 50127 Firenze, Italy;5. Centro Regional de Estudios del Agua (CREA), Universidad de Castilla-La Mancha, Ctra. de las Peñas, km 3.2, 02071 Albacete, Spain;1. Institute of Plant Production and Protection, Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile;2. Graduate School, Faculty of Agricultural Sciences, Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile;3. Instituto de Investigaciones Agropecuarias (INIA-La Cruz), Chorrillos 86, La Cruz, Casilla 3, Región de Valparaíso, Chile;4. Centro de Investigación en Suelos Volcánicos, Universidad Austral de Chile, Valdivia, Chile;5. Centro Regional de Estudios en Alimentos Saludables (CREAS), Conicyt Regional, Gore Región de Valparaíso, R12C1001, Avenida Universidad 330, Sector Curauma, Valparaíso, Chile;1. College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China;2. Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China;3. Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, 712100, Shaanxi, China;1. Agricultural Engineering Department, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia;2. Agricultural Engineering Department, College of Agriculture, Alexandria University, Alexandria, Egypt;3. Agricultural Engineering Research Institute (AEnRI), Agricultural Research Centre, Giza, Egypt;4. Alamoudi Water Research Chair, King Saud University, Riyadh 11451, Saudi Arabia |
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| Abstract: | A field experiment was conducted under sub-humid tropical conditions in Ethiopia using determinate cultivars Al-624, Al-436, CIP-388453-3(A) and CIP-388453-3(B) to study the effect of flowering and berry set on the growth, tuber yield, and quality of potato. Three treatments, viz. debudded, flowering, and fruiting plants were compared and standard growth analysis techniques were applied to study the growth pattern. Fruiting plants exhibited reduced leaf area index, tuber growth rate, and partitioning coefficient, but had higher crop growth rates and net assimilation rates. Fruit development reduced total and marketable tuber mass and tuber number without affecting the unmarketable component. Cultivars varied with respect to tuber yield, tuber number, size distribution, specific gravity, dry matter content, and nutrient composition. Fruiting reduced tuber specific gravity and dry matter content while increasing P, K, Mg, Fe, and Mn content of the tubers. Reproductive growth did not affect tuber Ca, S, Cu, and Zn concentrations. The field experiment demonstrated that reproductive growth restricts vegetative growth and reduces tuber yield and dry matter content of potato. |
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