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Pollination success in some white yam genotypes under polycross and nested mating designs

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Title Pollination success in some white yam genotypes under polycross and nested mating designs
 
Creator Norman, P.E.
Asfaw, A.
Tongoona, P.B.
Danquah, A.O.
Danquah, E.Y.
Koeyer, D. de
Asiedu, Robert
 
Subject pollination
dioscorea rotundata
mating systems
reproduction
yam breeding
genotypes
 
Description Breeding yams is a two-step process that combines sexual and asexual reproduction. Sexual reproduction involving a transfer of pollen from male to female genotype reproductive organ is a key step to generate variability in yam improvement. The efficacy of genetic improvement therefore depends on degree of pollination success resulting in fruit set and producing viable botanical seeds. This study assessed pollination success attributes in white yam (Dioscorea rotundata) genotypes using two mating designs: polycross and nested mating designs. Selected floral, fruit and seed traits were assessed in 12 parents (comprising nine females and three males) used in a polycross (natural) and nested (artificial hand pollination) mating designs. Total fruit sets and number of filled seeds were lower under nested mating compared to the polycross design. However, filled seeds per fruits were higher in nested mating than in polycross design. Fruiting success and number of flowers pollinated contributed more to the variability in filled seeds in polycross (R2=0.67; p
 
Date 2018
2018-06-01T09:29:40Z
2018-06-01T09:29:40Z
 
Type Journal Article
 
Identifier Norman, P.E., Asfaw, A., Tongoona, P., Danquah, A., Danquah, E.Y., De Koeyer, D. & Asiedu, R. (2018). Pollination success in some white yam genotypes under polycross and nested mating designs. International Journal of Biological Sciences and Applications, 5(2), 19-28.
2375-3811
https://hdl.handle.net/10568/92992
http://www.aascit.org/journal/ijbsa
BIOTECH & PLANT BREEDING
 
Language en
 
Rights Limited Access
 
Format 19-28
 
Source International Journal of Biological Sciences and Applications