self-pollinating accessions from the germplasm bank, improved
clones and mutagenized populations. As a result several useful
recessive traits were identified and are reported elsewhere in
this meeting (i.e. tolerance to post-harvest physiological
deterioration, amylose-free or high-amylose starch mutations,
sugary cassava, etc.)1,2. A peculiar phenotype, characterized by
absence (MVEN331) or very short petiole (MVEN332) was known to
cassava scientists at CIAT.