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Male meiotic studies carried out on the plants of Fagopyrum acutatum (Polygonaceae) collected from the Parvati valley, Kullu district, Himachal Pradesh, India confirms the earlier chromosome reports of 2n=16 from outside of India. The presently recorded chromosome count of n=8 in pollen mother cells (PMCs) is the first ever report of a diploid cytotype for the species from India. The presently studied diploid individuals from the Parvati valley showed the presence of structural heterozygosity for reciprocal translocations. Analysis reveals that multiple associations of four to six chromosomes were noticed in 39–40% meiocytes. A few PMCs in the accession also depicted the presence of two to six univalent chromosomes which could be attributed to the hybrid nature of the taxon or due to synaptic irregularities in chromosomal pairing during meiosis. Consequent to multiple chromosomal associations and univalent chromosomes, the studied plants depicted some pollen sterility.

cytologia

Spontaneous Occurrence of Structural Heterozygosity in ‘Buckwheat’ (&lt;i&gt;Fagopyrum acutatum&lt;/i&gt;) from the Parvati Valley, Himachal Pradesh, India