Mulima, E. and Sibiya, J. and Cousin Musvosvi, C. and Egas Nhamucho, E.
(2018)
Identification of important morphological traits in
Mozambican sorghum [Sorghum bicolor (L.) Moench]
germplasm using multivariate analysis.
African Journal of Agricultural Research, 13 (34).
pp. 1796-1810.
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Abstract
Classification of sorghum [Sorghum bicolor (L) Moench] breeding material based on multiple crucial
characters is important towards the possible formation of homogeneous groups of genotypes and
groups that can be exploited in the identification of parents for use in a breeding program. The
objective was to determine the morphological characters that distinguish desirable breeding material
and group the genotypes of sorghum according to similarity. Principal component analysis (PCA) and
cluster analysis were used to establish the relationships among germplasm and the Shannon Diversity
index was used to quantify the level of diversity. The experiment involving 26 sorghum genotypes was
conducted at Sussundenga Research Station across two seasons and laid out in a 13 × 2 alpha lattice
design with four replications. Cluster analysis grouped genotypes into four clusters based on 15
evaluated traits. Five principal components cumulatively accounting for 58.5% of the total variation
were estimated from the PCA analysis. The results showed that genotypes 150B, IS 14257R, LARSVYT
46B, TX 631B, TX 630B and 8601B were the early maturity while for late maturity genotypes were MA 6B,
A 6352R, ICSA 19B and MZ 30R. The genotypes IS 7179R, SPL 9B, A 6353R, SPL 38B, SDS 6013R and
MZ 2R showed a potential for grain yield improvement. Other genotypes presented potential for drought
tolerance and birds attack. The multivariate analyses clearly showed the grouping of the genotypes
according to the characters outlined in the study. These results have implications in selecting parents
for use in sorghum breeding program.
| Item Type: |
Article
|
| Uncontrolled Keywords: |
Cluster analysis, diversity index, principal component analysis and sorghum improvement |
| Author Affiliation: |
University of KwaZulu-Natal-African Centre for Crop Improvement, School of Agricultural, Earth and Environmental
Sciences South Africa. |
| Subjects: |
Crop Improvement |
| Divisions: |
Sorghum |
| Depositing User: |
Mr T L Gautham
|
| Date Deposited: |
28 Aug 2018 07:52 |
| Last Modified: |
28 Aug 2018 07:52 |
| URI: |
http://eprints.icrisat.ac.in/id/eprint/15580 |
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