Response of Lashata Cotton Cultivar to Foliar Application Time and Different Levels of Mepiquat Chloride (Pix) | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 12, Issue 3, September 2012, Pages 85-92 | ||
| Authors | ||
| and M. K. Alak; N. A. Sarkees; R. M. H. Hussien | ||
| Abstract | ||
| A field experiment was carried out at Field experiments, College of Agriculture/Abu-Graib, University of Baghdad, during season 2007 to study the effect of three foliar application dates viz. (at flowering buds formation, at flowering stage and at boll formation), and three different levels of growth regulators (Pix) i.e. (500, 1000 and 1500 cm3 ha-1) on lint traits and qualitative characters for seed. The results showed that the foliar application dates,(Pix)levels and interaction between them have significant effect on, lint and seed traits. Plant fibers foliar applied with growth regulator at boll formation stage were distinguished by their length, strength and fineness, when the plants were applied at the level of 500 cm3 ha-1 treatment, it produced long, strong, and more rough fibers as compared with 1500 cm3 ha-1 treatment (with short and fine lint). Applying (Pix) at level of 500 cm3 ha-1 at boll formation stage produced longer lint, where 1500 cm3 ha-1 treatment produced fine lint at the same stage. The strongest lint was at flowering buds formation at the level of 1000 cm3 ha-1. The plants seeds where treatment of 1000 cm3 ha-1 was applied at flowering buds stage gave higher oil and protein percentage rates of (24.5 and 22.3%) respectively, on the other hand, they produced the highest oil percentage at flowering stage, while applying at flowering buds formation stage gave highest protein percentage. Highest oil and protein percentage were at applying of 1000 cm3 ha-1 treatment. The saturated fatty acids combination was decreased with foliar application at flowering buds stage offsets increase in unsaturated fatty acids combination. When 500 cm3 ha-1 treatment was applied, there was decreasing saturated fatty acids combination accompanied with increasing in unsaturated fatty acids combination. The level of 1500 cm3 ha-1 treatment at flowering buds formation led to decrease in saturated fatty acids combination (palmitic and stearic acids) in contrast to increase of unsaturated fatty acids combination (oleic, linoleic and linolenic acids) through Tu/Ts which gave highest rate of unsaturated fatty acids combination to saturated fatty acids combination. Palmitic acid is more abundant in saturated fatty acids while, linoleic acid is more abundant in unsaturated fatty acids combination. | ||
| Keywords | ||
| Lashata Cotton; Mepiquat Chloride | ||
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