00000cab a22000004a 4500 IPP-00000659806 IPP 20240819164828.0 240819s2005 xx d | ||r |||||eng|| eng Sharaf Uddin, M. Indicators of genetic erosion in coconut (Cocos nucifera L.) populations in selected communities of Northern and Southern Luzon, Philippines 2005 tables ; references A survey to assess genetic erosion in populations of coconuts (Cocos nucifera L.) was conducted in three provinces in Northern Luzon, namely, Pangasinan, Isabela and Nueva Vizcaya and in Quezon, a province in Southern Luzon, Philippines. The decrease in coconut area and number of palms were the indicators used to determine the extent of genetic erosion. Genetic erosion was noted in all provinces except Pangasinan. In the three provinces, the coconut farm size was reduced by 14% to 20% and the number of palms in Quezon and Isabela decreased by 20.90% and 4.91%, respectively. The reasons for the decrease in coconut area and number of palms were poor marketing system, the low market price of the nuts, soil erosion and crop conversion. In Isabela, the coconut populations had been replaced because the palms were old and unproductive. In Nueva Vizcaya and Pangasinan, replanting with the same coconut variety was practiced, hence, its conservation on-farm. Replanting using other coconut varieties in Isabela may contribute to genetic enhancement of the population. Promoting the multipurpose uses of coconuts is recommended to encourage farmers to conserve coconut cultivars on-farm. Coconut Sangalang, J. B. Borromeo, T. H. Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) Vol. 88, no. 2 (Jun. 2005), 145-156 Article FI