Diversity Among Pearl Millet Landraces Collected in Central Burkina Faso

Abstract

Evaluation of genetic diversity within germplasm collections is important to plant breeders who desire sources of genes for particular traits. The S1 bulks of 103 landraces of pearl millet [Pennisetum glaucum (L) R. Br.] collected in central Burkina Faso, West Africa were evaluated for morphologic characteristics in an attempt to differentiate among the landraces. Seed shape, seed color, and 100 seed weight were evaluated. Maturity and height of field‐grown plants were assessed in 1987 and 1988, and panicle length and diameter were measured in 1988. Frequencies of chlorophyll‐deficient seedlings were determined. These descriptors, in addition to previously reported data of their resistance to Pyricularia grisea (Cke.) Sacc., Puccinia substriata Ell. & Barth vat. indica Rach. & Cumin., and Moesziomyces penicillariae (Bref.) Vanky, and seed set after inoculation with M. penicillariae were analyzed by Ward's cluster analysis. The landraces could be grouped into ten dusters of phenotypic diversity. There was some correspondence between the geographic collection sites of landraces and their inclusion in particular clusters. Analysis of morphologic and disease resistance descriptors was useful for identifying likely duplicates within the collection, and will facilitate identification of potentially different sources of desired traits.

Genetic variability and multivariate analysis in pearl millet (Pennisetum glaucum (L.) R. Br.) germplasm for dual purpose

“…The maximum number of accessions (82) were included in cluster I, whereas clusters III -VII and IX -XII contained only one accession each, which would indicate extreme phenotypic performance in a positive or negative direction for one, or the other character. Cluster I included accessions from all sources, indicating that there was no association between pattern of clusters and geographical distribution of accessions, and this agrees with earlier findings of Thete et al (1986), Joshi et al (1988) and Wilson et al (1990). Considering the intra and inter-cluster distances (Table 03) the maximum inter-cluster distance was recorded between cluster XI and XII.…”

Patterns of molecular and phenotypic diversity in pearl millet [Pennisetum glaucum (L.) R. Br.] from West and Central Africa and their relation to geographical and environmental parameters

“…[15] identified based on isozyme markers two distinct sub-groups in pearl millet inbreds from West Africa, whereas [19] reported three sub-groups for pearl millet landraces from Niger. In contrast, [1] identified based on phenotypic data of morphological and disease resistance traits ten clusters of pearl millet landraces from Burkina Faso. These differences in the number of sub-groups compared to our study, are most likely due to the fact that earlier studies examined a lower number of accessions than we did.…”

Spatial and temporal dynamics in genetic diversity in upland rice and late millet (Pennisetum glaucum (L.) R. Br.) in The Gambia

“…In various studies, it has been shown that in other parts of the world farmers also use a wide range of rice varieties (Richards 1986;Lambert 1985;Dennis 1988). In the case of pearl millet, farmers in Nigeria and Burkina Faso use a wider range of millet varieties compared to The Gambia (Busso et al 2000;Wilson et al 1990). This difference in variety use between rice and millet can be explained by the breeding systems of the two crops, rice being a self-pollinator and millet a cross-pollinator, and by the greater complexity of ecological conditions for rice compared to those for millet.…”