Tag Archives: heterosis

Each sweetpotato clone is a highly heterozygous hybrid –so let us do better clone hybrid breeding

Exploitation of hybrid vigor is one of the hallmarks of modern plant and animal breeding, but until recently had not been seriously considered by root and tuber breeders. In sweetpotato breeding, we have made exciting progress developing and implementing heterosis exploiting breeding schemes (HEBS) and are now applying this approach …

Analysis of the gene action exhibited by an agronomic trait in crop plants is useful in the planning of an effective plant breeding program. This study sought to establish the inheritance variance of root yield components and beta carotene content present in sweet potato clones commonly grown in Kenya. Ten …

Why developing hybrid breeding populations?Sweetpotato is a highly heterozygous clone hybrid crop and with hybrid breeding populations we achieve (i) yield increase, (ii) ease to stack simple inherited traits such as quality and disease resistance, and (iii) elevated yield stability. Achieving these goals is much more effective by offspring-parent analysis …

The objective of this study was to develop end-user preferred sweetpotato varieties using a diallel mating scheme and to estimate the level of heterosis and heterobeltiosis.  using a diallel mating scheme and to estimate the level of heterosis and heterobeltiosis among F1 hybrids obtained from a diallel between low sugar sweetpotato genotypes.   Sweetpotato …

Sweetpotato is in the botanical family Convolvulaceae. It is the only crop plant of major economic importance for food among the approximately 50 genera and more than 1000 species of the family, which may be due to the Agrobacterium infection which occurred in evolutionary times of the crop. It is a nutritious food, low in fat and …

National sweetpotato breeding programs are time consuming and delay to produce new variety. Frequently those new varieties do not suit the various geographic areas and the preferences of diverse farmers and consumers within a country. Most countries have no real breeding program and rely on testing materials developed elsewhere, which …

The conventional sweetpotato breeding (CSB) programs are time consuming. The new varieties released via CSB often fail to suit the various geo-graphic areas and the preferences of diverse farmers and consumers within a country. Indeed, most of these countries lack real breeding program hence rely on testing materials developed elsewhere. …

In this presentation, Robert Mwanga explained the meaning of heterosis and heterotic increments and outlined some of the work that has already been published on this subject. He briefly reviewed heterosis breeding studies at CIP over the past 10 years, and presented current thinking on strategies for the way forward. He …