Alpha-amylase activity, calcium content and water uptake of different rice cultivars with heavy, medium and light grains
Date
4-1993
Degree
Bachelor of Science in Biology
Major Course
Major in Cell Biology
College
College of Arts and Sciences (CAS)
Adviser/Committee Chair
Arcelia A. Alejar
Abstract
There is a wide variation in the physical characteristics of rice grains. Grain weights, in particular, effects seed germination and seedling vigor or heterosis. It is well known that the enzyme, α-amylase, is likewise associated with heterosis in cereals and that calcium ions regulate α-amylase secretion. Grains with heavy, medium and light weight from six rice cultivars were used to determine the possible relationship among α-amylase activity, calcium content, water uptake, grain weight and seedling vigor.
Results showed that α-amylase activity tends to the higher in heavy grains. Seedlings grown from this lot procedure significantly longer roots and shoots. Water uptake we also found to be directly proportional to the weight of the grains. In contrast, calcium content was in the order: Light . medium . heavy.
Data support numerous findings that heavy weight grains indicate seedling vigor as shown by the observed proportionate activity of α-amylase to grain weight.
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Call Number
Thesis
Recommended Citation
Recuenco, Jelwyn Theresa D., "Alpha-amylase activity, calcium content and water uptake of different rice cultivars with heavy, medium and light grains" (1993). Undergraduate Theses. 11950.
https://www.ukdr.uplb.edu.ph/etd-undergrad/11950
Document Type
Thesis
