New microchondrometer to measure hectoliter weight in small samples of wheat

Abstract

The hectoliter weight or test weight is an important wheat quality parameter for international trade and is traditionally evaluated on devices with a volume of 250, 500, 1000 or 1100 ml. At the experimental level, especially in crop improvement and in greenhouse studies, the amount of grain is often insufficient to determine hectoliter weight. The present work aimed to evaluate the feasibility of using a new 15.30 ml microchondrometer to evaluate hectoliter weight. The testing process was carried out in two steps: (i) To evaluate the need to compress wheat grains inside the microchondrometer cylinder with weights of 0, 4.4, 8.8 and 13.2 kg, and (ii) To verify the effect of different piston weights (4.0, 9.52, 17.56, 28.44 and 31.69 g). A comparison of four compression treatments and five piston weights between 250 ml and 15.30 ml chondrometers were performed by Spearman's correlation coefficient and t-test. The results showed a highly significant correlation coefficient (r=0.99) between the two apparatus and lack of significance for compression and piston weights. The 15.30 ml microchondrometer, in addition to allowing better characterization in small grain samples, will also help to discard unwanted genotypes early in the selection process.

A Comparative Assessment of Agronomic and Baking Qualities of Modern/Old Varieties and Landraces of Wheat Grown in Calabria (Italy)

“…Stress factors during cereal growth and genetic differences affect this physical quality trait. Measurements above 76 kg hL −1 are associated with high quality wheat for the milling industry [ 48 ]. Abbondanza was the only genotype showing a HW below the optimal threshold mentioned above, while some variability was found between modern genotypes and landraces.…”

Optimizing time and split application of nitrogen fertilizer to harness grain yield and quality of bread wheat (Triticum Aestivum L.) in northwestern Ethiopia

“…Higher the hectoliter weight, the better is the flour yield. The values large from 70–85 kg hl -1 higher the hectoliter weight better is the wheat for milling in terms of flour yield [ 40 ]. From the above dried, cleaned and adjusted yield a subsample from each net plot was taken and milled.…”