Phytic acid (PA) is the main storage organic form of phosphorus (P) in seeds of cereals and legumes. It is a strong inhibitor against the absorption of nutrients in monogastric animals. The objective of this study was to determine the variation of total P (TP) in seeds of mungbean germplasm and investigate the inheritance of seed P compound and phytate contents. TP content in seeds of 250 accessions were found to range from 2.34 to 5.75 mg/g. The inheritance was studied in the F 2 population derived from a cross between 2 accessions with the lowest and highest PA contents, viz. V1658BBR and V1141BG. Broad-sense heritability estimates of TP, inorganic P (IP), and phytate P (PhyP) contents were 80.8, 78.6 and 80.7%, respectively. The 9:7 segregation ratio of F 2 population in this study indicated that high TP and PhyP were controlled by dominant alleles at 2 independent loci of major genes showing duplicated recessive epistasis.

The physical properties of six ICCS fibers— B—26, C-36, D-5, E-4, G-17, and I-26-their percent crystallinity, and the amount of absorbed water are measured in order to establish relationships with specific surface areas measured by the absorption of methylene blue in a liquid phase. The results show the relationships between the surface area as measured by methylene blue absorption and fineness as measured by the gravimetric method, FMT3, and AFIS. Furthermore, there is a linear relationship between the surface area and the water content of cotton fibers, as determined by thermal-balance analysis. There is no clear relationship between the surface area and the percent crystallinity of the fibers.In a previous work, we used the absorption of methylene blue to determine the specific surface area of six iccs cotton standards [8]. We &dquo;showed that it might be possible to some extent to use the specific surface area measurements as a direct cotton fiber quality attribute.Among the objectives of fiber quality measurements are the determination of the physical properties of fibers by high volume instruments (HVi) and the Advanced Fiber Information System (AFIS), and the relationships between structure/morphology and fiber/yarn strength and performance. Moreover, fiber quality is a major concern for all segments of the cotton industry. Physical properties of cotton fibers serve as the main predictors of their performance. However, interpreting measurements have not always been successful when correlating fiber quality with processing efficiency. Specific surface area, which is defined as the accessible area of a solid surface per unit mass of material, is one of the physical characteristics that is important for dyeing as well as for chemical finishing of cotton fabrics.Cotton fibers consist of 95% cellulose, and after scouring and bleaching they are 99.% pure cellulose [5]. Cellulose is a natural polymer [(C6H,o05)n] made up of anhydro-glucose units linked by 1,4 oxygen bridges. The characteristics of cellulosic fibers are primarily due to their number of hydroxyl groups: there are three hydroxyl groups present in each anhydro-glucose unit of cellulosic fibers, so they are hydrophilic and have a high moisture regain. The hydroxyl groups serve as bonding sites for dye molecules, for absorption of water through hydrogen bonds, and for chemical crosslinking with various textile finishing chemicals. The presence of absorbed water can affect the properties and characteristics of cotton fibers. Since the specific surface area is one of the most important physical properties for dyeing and chemical finishing, we have conducted this study to determine the effect of absorbed water on the specific surface area of six International Calibration Cotton Standards (ICCS) cotton fibers, and to investigate the relationship between the specific surface area as measured by absorption of methylene blue in the aqueous phase and the percent crystallinity as well as fiber fineness. Materials and MethodsBased on their distin...