H, Meftahizadeh; M.H. Asareh
Abstract
In order to compare native populations and commercial cultivars of guar (Cyamopsis tetragonoloba L.), a factorial experiment was conducted in three growing seasons (March 10, June 5 and August 15) in a randomized complete block design with three replications in Iranshahr city, Sistan and Baluchistan ...
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In order to compare native populations and commercial cultivars of guar (Cyamopsis tetragonoloba L.), a factorial experiment was conducted in three growing seasons (March 10, June 5 and August 15) in a randomized complete block design with three replications in Iranshahr city, Sistan and Baluchistan province, in 2017. Qualitative traits (the percentage of protein, carbohydrate, chlorophyll, and gum), yield and its components were measured. The results showed that the effect of planting season and genotype (native populations and commercial cultivars) on plant height was significant at 1% level. The Mean comparison showed that "Pishen" population × August 15 planting and "Grembit" population × March 10 planting interactions had the highest and lowest growth periods, respectively. The highest number of pods per plant was obtained in the interaction of "Grembit" population × 10 March planting. Also, the interactions of "Sarbaz" and "Grembit" populations × March 10 planting and "Grembit" × June 5 planting caused the highest amount of seed in the plant. The highest weight of seeds was obtained in the interactions of "Sarbaz", "Grembit" and "Dalgan" populations × March 10 planting, and the lowest one in the interactions of "HG-563" cultivar × August 15 planting and "RGC-1033" cultivar × March 10 planting. "Saravan" population on August 15 planting time had the highest carbohydrate percentage. The interactions of "Grembit" × June 5 and March 10 plantings and "RGC-986" × June 5 planting had the highest protein percentage and "RGC-986" × June 5 planting had the highest gum percentage. According to the results of this study, it can be concluded that Iranian guar populations are very important for the shortest growth period (premature), protein percentage, seed yield, number of pods per plant, and seed weight, and could be suggested in breeding programs of the species.
H. Meftahizade; Y. Hamidoghli; M.H. Asareh; M. Javanmard Dakheli
Abstract
This research was aimed to investigate the effects of sowing date and irrigation regimes on phytochemical attributes of guar genotypes. The study was conducted in a split-split plot randomized block design including two sowing dates (15th and 30th July), four irrigation regimes, and three genotypes with ...
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This research was aimed to investigate the effects of sowing date and irrigation regimes on phytochemical attributes of guar genotypes. The study was conducted in a split-split plot randomized block design including two sowing dates (15th and 30th July), four irrigation regimes, and three genotypes with three replication for two seasons (2015 and 2016). The seeds were harvested and ethanolic extraction was prepared to analyze physicochemical traits such as antioxidant activity, phenol, tannin, protein, viscosity, galactomannan content, etc. The results showed that there were significant differences (P≤0.01%) between sowing date and irrigation regimes in case of phytochemical traits, seed protein, galactomannan content, and minerals. The range of galactomannan content was 28-33%, where the maximum galactomannan level (33.8%) was recorded for the interaction of late sowing date × four- stage irrigation schedule. Among the genotypes studied, the third genotype (RGC-1066) had the highest antioxidant activity and gum protein percentage. There is no significant difference among the genotypes for other characteristics. Late sowing date, G3 (RGC-1066) and four-stage irrigation schedule during growth cycle were the best treatments. The results of this study showed that guar planting in the study area is positively evaluated in terms of mineral materials, protein content, and gum viscosity; therefore, its development can be recommended in the agronomic program.
