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Quantitative karyotypic analysis in five varieties of lentil (Lens Culinaris Medik.)

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Research Paper 03/01/2024
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Quantitative karyotypic analysis in five varieties of lentil (Lens Culinaris Medik.)

Md. Abdul Bari, Most. Sabina Yasmin, Md. Saifur Rahman, Md. Mamunur Rashid Sarkar, Golam Kabir
Int. J. Biosci.24( 1), 1-9, January 2024.
Certificate: IJB 2024 [Generate Certificate]
Key: Breeding programEvolutionary trendLentilQuantitative karyotype

Abstract

Lentil (Lens culinaris Medik.) is one of the common pulse crop worldwide belongs to the family Leguminosae bearing chromsome number 2n=14. Five varieties of lentil seeds i.e., BARI Musur-1, 2, 3, 4 and 8406-122 were selected for quantitative karyotypic analysis released by BARI. The identified chromosome pairs were four (I, II, IV, VI) in BARI Musur-1, five (I, II, III, V, VII) in BARI Musur-2, five (I, II, III, IV, VII) in BARI Musur-3, four (I, II, IV, VII) in BARI Musur-4 and three (I, IV, VI) in BARI Musur-8406-122. Unidentified chromosomes were allocated in different morphological classes based on probabilistic inferences. Total chromatin length (TCL) was found to be the largest in BARI masur-3 and smallest in BARI masur-2. Total fraction frequency (TF %) was observed highest in BARI masur-8406-122 and lowest in BARI masur-4. The proposed standard karyotype were 2L1m+1Sm+2M1m+1st+3S12sm+1st for BARI Musur-1, 1Lm+2M1m+1sm+3S11m+1sm+1st+1S21st for BARI Musur-2, 4L2m+2sm+3M1sm+2st for BARI Musur-3, 5L1m+3sm+1st+1M1St+1S11Sm for BARI Musur-4 and 1L1m+3M2m+1sm+3S11Sm+2st for BARI Musur-8406-122. All examined varieties of lentil showed assymetric karyotype with the presence of two sub-terminal chromosomes except BARI Musur-1 consist of only one. These research findings suggest their advanceness in nature and leads to the evolutionary trends which may be helpful for plant breeding program.

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