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Color Spread on plants from different centers of origin
Evolution and variability of species
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1ther Africa agricultural alleles Asia autogamous Bass beans biased sample breeders breeding programmes cells centres of origin Chapingo characteristics chayote chromosome collecting sheet collecting trip collection gardens collector colour conservation crops Cucurbitaceae cultivated defined descriptor list Directory of germplasm dormancy drying evaluation example factors flowering frequently Fruit Fruit Fruit genebank genes genetic resources germination germination test germplasm germplasm collections Grami Grami Grami guayule IBPGR imber imber imber included industrialised countries Introduced Introduced Legum Legum Legum Legum Leguminosae maize material Mesoamerica Mesoamerica Mesoamerica Mexico modern varieties modern-bred varieties necessary Nicaragua non-conventional species O.H. and Bennett peasants pests Phaseolus Plant Genetic Resources population potato potential preservation priority production proposed recalcitrant seeds regeneration relative humidity Roma Roos Safflower sample seeds sheet number Sorghum storage stored studied techniques temperature Third World tion tissue traditional varieties trees tropical utilisation vegetative viability wheat wild species