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The 'A' genome donor of Eleusine coracana (L.) Gaertn. (Gramineae)


, : The 'A' genome donor of Eleusine coracana (L.) Gaertn. (Gramineae). Tag. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik 84(5-6): 747-754

In an attempt to discover 'A' and 'B' genome donor(s) to finger millet, Eleusine coracana, or its progenitor species, E. africana (both allotetraploid 2n = 4x = 36), five diploid species, E. indica, E. floccifolia, E. multiflora, E. tristachya and E. intermedia, were crossed to finger millet and its progenitor taxon. Crosses were successful only with E. coracana. Three combinations of triploid hybrids E. coracana X E. indica, E. coracana X E. floccifolia, and E. coracana X E. multiflora were obtained and analysed. Meiotic behaviour was perfectly normal in parental species. The regular number of 18 bivalents in E. coracana, 9 bivalents in E. indica, E. intermedia, E. tristachya and E. floccifolia and 8 bivalents in E. multiflora were invariably noticed. In E. coracana X E. indica hybrids a mean chromosome pairing of 8.84(I) + 8.80(II) + 0.03(III) + 0.10(IV) per cell was found. About 86.5% of the cells showed the typical 9(I) + 9(II) configuration, suggesting that E. indica (AA) is one of the diploid genome donors to cultivated species E. coracana. A mean chromosome pairing of 11.08(I) + 7.63(II) + 0.16(III) + 0.04(IV) per cell was found in E. coracana X E. floccifolia hybrids. Two to ten bivalents and varying numbers of univalents were seen in 55% of the cells. About 45% of the cells showed the 9(I) + 9(II) configuration. Various evidence suggests that perennial E. floccifolia is a primitive member of the 'A' genome group of Eleusine species, and it may not be a genome donor to E. coracana. In E. coracana X E. multiflora hybrids (2n = 26) mean chromosome pairing of 21.45(I) + 1.97(II) + 0.13(III) + 0.04(IV) per cell was found. About 91% of the cells were observed to have 20-26 univalents. Only a small percentage of the cells contained bivalents or multivalents. This pairing behaviour indicates that E. multiflora lacks genomic homology with the 'A' or 'B' genome of E. coracana. Genomically E. multiflora is a distinct species and a genomic symbol of 'C' is assigned to it. Identification of the 'B' genome donor species to cultivated millet. E. coracana remains elusive.

Accession: 002241071

PMID: 24201369

DOI: 10.1007/BF00224180

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Related references

Chennaveeraiah, M.S.; Hiremath, S.C., 1974: Genome analysis of Eleusine coracana (L.) Gaertn. E. coracana was crossed with E. africana and E. indica. The F1 hybrids were intermediate between the parents in most morphological characters but both resembled the female parent E. coracana in purple pigmentation and the male parents in having sh...

Satish Kumar; Kalpana Agarwal; Kothari, S.L., 2001: In vitro induction and enlargement of apical domes and formation of multiple shoots in finger millet, Eleusine coracana (L.) Gaertn and crowfoot grass, Eleusine indica (L.) Gaertn. A protocol for high frequency regeneration of E. coracana (cultivars PR-202, L-216 and GE-4971) via formation of large apical domes from seeds, mature emryos, immature inflorescences and immature embryos was developed. The induction of apical dome...

Kumar, S.; Agarwal, K.; Kothari, S.L., 2001: In vitro induction and enlargement of apical domes and formation of multiple shoots in finger millet, Eleusine coracana Gaertn and crowfoot grass, Eleusine indica Gaertn. In cereal crops, somatic embryogenesis is the most common pathway of plant regeneration. We describe a protocol for high frequency regeneration of Eleusine coracana via formation of large apical domes from seeds, mature embryos, immature infloresc...

Bisht, M.S.; Mukai, Y., 2001: Genomic in situ hybridization identifies genome donor of finger millet (Eleusine coracana). Eleusine coracana, commonly called finger millet, is an important cereal of semi-arid regions, cultivated in parts of Africa and India for its grain. It is reported to be an allotetraploid with a chromosome number 2n = 4x = 36, and diploid species...

Werth, C.R.; Hilu, K.W.; Langner, C.A., 1993: Evidence from isozymes and RAPD markers bearing on the ancestry of finger millet Eleusine coracana ssp coracana and its wild relative Eleusine coracana ssp africana. American Journal of Botany 80(6 SUPPL ): 181

Mehta, P.R.; Chakravarty, S.C., 1937: A new disease of Eleusine coracana Gaertn. A new disease of Eleusine coracana is reported from Benares. The affected plants were stunted, pale, and tufted in appearance, often produced very short internodes, and formed numerous sterile lateral shoots from the upper nodes and abundant white...

Iyengar, K.G.; Dorasami, L.S.; Iyengar, R.S., 1945: Ragi (Eleusine coracana Gaertn. An account is given of Eleusine coracana, with reference to the synonyms and vernacular names of the species, the history of its cultivation in various countries, present day cultivation and production in Mysore and other regions of India, chemica...

Boraiah, G.S.amasundar, J.L.kshmanaiah, C.; Mallanna, K., 1980: Cytogenetics of Eleusine coracana Gaertn. Current trends in botanical research editors M Nagaraj C P Malik: 11-122

Anonymous, 1930: Polyembryony in Eleusine coracana, Gaertn

Patnaik, H.B.; Jana, M., 1973: Genetic variability in Eleusine coracana Gaertn. Of seven characters studied in 18 early varieties, the genotypic coefficient of variation was high for the number of days to maturity and grain yield. The estimates of heritability and of genetic advance were high for number of days to maturity.