Performance Studies in F6 Lines of Autotetraploid Fenugreek |
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Authors: | J. Singh S. S. Raghuvanshi A. K. Singh |
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Affiliation: | Jaya;Singh, S. S. Raghuvanshi, Plant Genetics Unit, Botany Department, Lucknow University, Lucknow –226 007 (India) Anil;K. Singh, Central Institute of Medicinal and Aromatic Plants, Lucknow –16 (India). |
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Abstract: | Hybridization followed by pedigree selection was carried out between two autotetraploid strains of fenugreek (Trigonella foenum-graecum L.). Morphological and cytological investigations were carried out in two autotetraploid parents, their F1 hybrids and F6 lines derived from F1 after selfing. Cytomorphological data of F6 lines were compared with those of F1, hybrids and of their parents. The hybrid plants were intermediate with respect to different vegetative traits, however, they showed increased seed set as compared to their autotetraploid parents. The mean pod number per plant in F6 was one and half times as high as one of the high yielding tetraploid parents and approximately twice as high as that of F1 hybrid. Meiosis in F6 was more regular than in F, and the parents. Thus, hybridization followed by pedigree selection is helpful not only in regularizing the meiotic behavior, but vigour and seed fertility have also improved in autotetraploid fenugreek. |
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Keywords: | Trigonella foenum-graecum autotetraploid intergenotypic hybrid meiotic associations chiasma frequency |
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