Abstract
indicated that there were some positive correlations. These data indicated that photosynthetic yield, fluorescence, chlorophyll content (SPAD value), cell membrane thermostability (CMT), plant height and number of bolls per plant can be used for improving seed cotton yield. However, among these measurements CMT, SPAD value and fluorescence were more practical in large breeding trials. The results showed that AGC 375 and AGC 208 cotton varieties had lower relative cell injury level (higher cell membrane thermostability) and higher seed cotton yield and photosynthetic yield than other investigated varieties.
Highlights
In accordance with Queiroz et al (2011), products classified as agricultural waste are often valuable material in the nutritional point of view; this material may be used in order to increase the yield of the main product
In the light of the foregoing, the purpose of this study was using an accumulative drier of solar energy in order to dry waste grains flour of annatto in the nocturnal period and studying the drying kinetic through mathematical models
One can verify that in both dryings (Treatments 1 and 2) the temperature reached in the solar dryer was higher than that recorded external environment
Summary
In accordance with Queiroz et al (2011), products classified as agricultural waste are often valuable material in the nutritional point of view; this material may be used in order to increase the yield of the main product. Rêgo et al (2010) provided the information that approximately 2,500 t of annatto waste grains are annually obtained in Brazil, almost 97% of it is not used Most of this waste is disposed; there is already demand for it by breeders that use it in the composition of animal feed and scientifical works that evidence its practicability for this purpose (Silva et al, 2006; Harder et al, 2007; Rêgo et al, 2010). These grains can be used in the human nourishment, with differentiated indication for dietary food, due to its high fiber content. Authors such as Pereira et al (2010) reported the amount of crude fiber in waste grains of annatto of 13.5% d.b. Authors such as Pereira et al (2010) reported the amount of crude fiber in waste grains of annatto of 13.5% d.b. Tonani et al (2000) found higher amount of crude fiber, corresponding to 15% d.b
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