Growth Characteristics, Protein, Fiber and Chlorophyll Contents of Eight Amaranth Cultivars
Keywords:
amaranth, growth characteristics, protein, fiber, chlorophyllAbstract
Amaranth is cultivated in all regions of Thailand, their leaves and young shoots are used for cooking. However, information of the amaranth plantation in the pot system which is suitable for people who live in restricted or less areas still have limited. Therefore, the objective of this study was to screening the amaranth cultivars that has potential or suitable to promote for household consumption from the 8 cultivars including red Chinese amaranth, green Chinese amaranth, white stem-green Chinese amaranth, red blush-green Chinese amaranth, weed amaranth, Thai amaranth, light green amaranth and red stem-green amaranth. The study focused on their growth characteristics including protein, fiber, chlorophyll a, chlorophyll b and fiber contents. Harvesting periods were set at 20 days (vegetative stage) and 40 days (reproductive stage) after transplanting. Results revealed that the red blush-green Chinese amaranth (TA 026) and Thai amaranth (AS 129) were higher growth rate than other cultivars while red Chinese amaranth and green Chinese amaranth (TA 024) were rather lower growth rate. For the nutritional analysis in terms of protein, chlorophyll a and chlorophyll b, the weed amaranth (SR 01-0835) and Thai amaranth (AS 129) had high contents at the vegetative stage. At the reproductive stage, Thai amaranth (AS 129) was still keep high contents in protein, chlorophyll a and chlorophyll b. The fiber contents were presented highest in weed amaranth (SR 01-0835) and red blush-green Chinese amaranth (TA026) was highest in fiber contents. From this study, we concluded that growth rate and nutrition values of the eight amaranth cultivars was declining when reached the reproductive stage. The results revealed that the Thai amaranth (AS 129) had a dominant variety both in high growth rate and nutritional values, therefore, it is suitable to be promoted to the public for household consumption particularly in the pot system
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