03-09-2012, 02:33 PM
Temporal and Spatial Variations in Pigments of Maiz Leavs
1Temporal.ppt (Size: 288 KB / Downloads: 31)
INTRODUCTION
Maize is one of the most important cereal crops in the world. It ranks second to wheat among the world cereal crops.
In Pakistan maize is third important cereal after wheat and rice.
In Azad Jammu &Kashmir maize ranked first with annual production of 149,161 metric tone(GOP).
It is apparently more drought resistant in early stages of growth then fully developed.
It is an important food and fodder crop. It is a staple food for vitamin A deficient population.
Objectives
To analyze the leaf pigmentation spectrophotometrically.
To simulate the quantity of leaf pigments with the spatial and temporal variations.
To analyze the data statistically to estimate the result variations at 5% level of significance.
FIELD WORK
The fields were selected in the village Tatali District Bhimber falls in sub tropical zone .
The climate was vary greatly. June and July are hottest months of the year and December and January are the coldest months of the year.
Plant Sampling
Fresh leaves were collected from selected fields of maize crop.
First sampling was carried out on 4, July 2010 when the crops were of one week old.
After the interval of every week for ten weeks, samples were collected for the treatment of time.
Homogenization
Leaves were cut into small pieces .The major veins and any tough, fibrous tissues were discarded.
Half gram of the leaves from each sample was put in the mortar and added 2ml of water and thrushed.
Then 5ml of 80% ethanol was added to grind the tissues with pestle to homogenize the tissues completely.
RESULTS AND DISCUSSION
The present project was carried out to observe the pigmentation as the criteria to understand the photosynthetic process as induced by temporal and spatial changes.
These variations during growth stages were determined by collection of samples at different times from different places.