Effect of Seed Size and Weight on Seed Vigour Parameters of Chickpea (Cicer arietinum L.)
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Date
2023-07-20
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Abstract
An experiment was conducted to find out “Effect of Seed Size and Weight on Seed Vigour Parameters of Chickpea (Cicer arietinum L.)”. Chickpea is a self-pollinating diploid (2n=16) crop which belong to the genus Cicer and family Fabaceae.
After beans and peas, chickpeas are the third-most important pulse crop in the world. Among the pulses grown in country, gram occupies a predominant position and is considered as a king of pulses. Seed is one of the most important and cheapest means of input for enhancing the production and sustainability of agriculture. For better response of other inputs like fertilizer, irrigation and plant protection chemicals applied for crop production, we must always use high quality seed. It can increase both credibility and yield of produce by 15-20% in the market.
In the channel of seed production, seed processing is an important step where physical quality of seed is concerned. During grading, we are loosing a sizeable quantity of quality seeds by using improper sieve sizes. Researches
indicate that if we slightly reduce the sieve aperture size we can have 6-12% more recovery of seeds.
The raw seeds passed through different sieves to obtain uniform size processed seed. During seed processing, the recovery of quality seed is highly affected by the aperture size of the sieve. We can obtain 8-10% more recovery of seed without deterioration of quality of seed and subsequent crop yield by reducing the aperture size of conventional sieve.
In the present study, three varieties of chickpea viz. KPG-59 (V1), KWR-108 (V2) and KGD-1168 (V3) were selected. The raw seeds of above varieties were graded with three different sieves having round aperture size of 6.80 mm (S1), 6.30 mm (S2) and 5.80 mm (S3). Each grade was assessed for its seed quality parameters in the laboratory.
The sieve aperture size determines the seed recovery percentage and quality of seed lot during processing. Results reveal that seed recovery percentage and seed quality parameters were highly influenced by variety, sieve size and their interaction. Most characters of quality seed increased with increasing sieve aperture size, but seed recovery percentage increased with decreasing sieve aperture size.
In the present investigation, varieties have showed significant effect with respect to all the parameters studied except seed moisture content. The different sieve sizes have showed significant effect with respect to all the characters studied except seed moisture content.
Thus, from the above study, it may be concluded that round sieve size of 6.80 mm can be used for processing of standard sieve size for chickpea variety KPG-59, KWR-108 and KGD-1168 without much loss in seed quality
but in our studies, we can suggest to use sieve size 6.30 mm which showed optimum standard quality parameters with higher seed recovery percentage.