Cucurbit Genetics Cooperative Report 22:57-58 (article 21) 1999 Humberto Rios Labrada and Marta Alvarez National Institute of Agriculture Science, INCA< GP 1, San Jose de Las Lajas, La Habana, Cuba, Cp 32700 The plant breeding approaches used by the informal seed sector has been little studied (1). However, in some crops such as pumpkin, this […]