Cytological and cytogenic variations of Philippine mango (Mangifera indica Linn.) cultivars.

Date

3-2001

Degree

Bachelor of Science in Biology

Major Course

Major in Cell Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Adelina A. Barrion

Abstract

Safranin-O- scrape method technique on leaf epidermal cells (e.g. stomates) of the three mango cultivars, namely: 'Carabao', 'Pico' and 'Indian' revealed the qualitative and quantitative features which were described and compared. Epidermal cells exhibited same linear and circular arrangements among the cultivars though less distinct in 'Indian' mango. All the cultivars have the same cubical to oval shapes of epidermal cells. The stomatal mean differences were insignificant but the stomatal lengths and widths of the guard cells were significantly different. For their stomatal directions, left, right and vertical, horizontal slantings for 'Carabao' and 'Pico' cultivars were observed compared to the left and right (almost 450) slantings for 'Indian' cultivar. The mitotic index, chromosome number, morphology and behavior at mitosis of each of the cultivars were also observed and compared. The mitotic index was found to he highest (84.58) in 'Pico', followed by 'Indian (78.85) and 'Carabao' (70.07). The diploid chromosome number of the three cultivars was 2n 40. Mean relative length of chromosomes was highest (0.025000) in 'Carabao' mango, which is followed closely by 'Indian' (0.024950) and 'Pico' (0.024900) mangoes.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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