|
Pak. J. Bot., 44(3): 1007-1012, 2012. |
Back to Contents | ||||
|
|
|||||
|
|
A COMPARATIVE CHROMOSOMAL COUNT AND MORPHOLOGICAL KARYOTYPING OF THREE INDIGENOUS CULTIVARS OF KALONGI (NIGELLA SATIVA L.)
RUKHSANA JABEEN1, T. IFTIKHAR2*, TAHIRA MENGAL1 AND MANZOOR IQBAL KHATTAK3
Abstract:
In the present study karyotypic analysis of three cultivars of
Nigella sativa L., has been carried out to determine chromosomal
position by using “Feulgen stain”. The diploid chromosomes were twelve
in numbers, characterized in six pair of chromosomes. All the cultivars
had similar chromosomal formula 2n = 12 = 10 m + 2T. The total length of
chromosomes among the land races of Kohat, (10.84µm to 4.50 µm),
Faisalabad (10.00µm to 4.50µm) and Kashmir (4.66 µm to 8.16 µm) were
calculated. Based on the centromeric position, there is a slight
variation in the total length of the chromosome complements of Kohat and
Faisalabad, whereas cultivars of Kashmir was found with much smaller
chromosomal length. The variation in centromeric position and
chromosomal length among these cultivars may be attributed to genetic
recombinations. 1Department of Plant Sciences SBKW University, Quetta, Pakistan 2Laboratory of Mycology & Biotechnology, Department of Botany, Govt. College, University Faisalabad, Pakistan 3Department Chemistry, Balochistan University, Quetta, Pakistan *Corresponding author e-mail: pakaim2001@yahoo.com |
|
|||
|
|
|||||
| Back to Contents |
|
Back to Contents | |||
|
|
|||||