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Articles by Noor-ul-Islam
Total Records ( 4 ) for Noor-ul-Islam
  Muhammad Iqbal , Khezir Hayat , Rao Sohail Ahmad Khan , Attiq Sadiq and Noor-ul-Islam
  The objective of this study was to get information about a character that is useful for selection in segregating generations for improving seed cotton yield. The present study was conducted to determine correlation and path coefficient analysis of earliness and yield components of upland cotton. The results showed that node of first fruiting branch, monopodial branches/ Plant, boll number and boll weight was positively and significantly correlated with yield in present genetic material understudy. Similarly path coefficient analysis revealed that node of first fruiting branch, monopodial branches/ Plant, boll number and boll weight had maximum direct positive effect on seed cotton yield, whereas the traits ginning out turn percentage (GOT%) and staple length had the direct negative effect on seed cotton yield. The results indicated that for evolving a superior genotype possessing all the three basic characteristics i.e., earliness, high yield and improved fiber quality of international standard, breeder had to use reciprocal recurrent selection method or modified back cross or three- way cross within genetic material under study. The result of present study indicated that for evolving a superior genotype possessing earliness, high yield, breeder should focus on improving no. of bolls and boll weight with lower no. of monopodial branches and node of first fruiting branch.
  Muhammad Iqbal , Khezir Hayat and Noor-ul-Islam
  Mepiquat chloride (1-1-dimethyl-piperidinium chloride) as a plant growth regulator that can be used by producer to manage the crop development, uniformity and maturity. Field experiment was conducted during 2005-06 to evaluate the affect of plant spacing, Nitrogen fertilizer and mepiquat chloride application on cotton (Gossypium hirsutum L.) var. MNH789. Three plants spacing (15, 23 and 30 cm), four nitrogen fertilizer level (0, 50, 100 and 150 kg ha-1) with two rates of Mepiquat chloride (2x100, 2x200 mL ha-1 ) were evaluated for seed cotton yield and yield components. Results showed that Plant Height (PH), Monopodial branches per plant (MB), Node of first fruiting branch (NFB), sympodial branches/plant (SB), No. of bolls/plant and seed cotton yield were different among plant spacing, nitrogen fertilizer while MB, NFB, SB and total main stem nodes/plant were not differed significantly among the Pix application. Whereas MB, B. wt was not affected significantly by the plant spacing, nitrogen fertilizer and pix application. Cotton grown in narrow plant spacing (15 and 23 cm) had higher seed cotton yield (4218 and 4171 kg ha-1) at high dose of fertilizer (150 kg ha-1) with low dose of pix (2x100 mL ha-1). This combination of treatment increased the total main stem nodes, SB and bolls/plant while the internodal length decreased. From present study it is concluded that high seed cotton yield can be achieved at low plant spacing, high nitrogen fertilizer with use of pix to manage the excessive plant growth.
  Muhammad Iqbal , Noor-ul-Islam , Khezir Hayat and Taj Muhammad
  The objective of this study was to compare yield, yield components and fiber traits of different genotypes/varieties under different plant spacings and nitrogen fertilizer levels. Field experiment was conducted during 2006-2007 to evaluate the effect of genotype, plant spacing and nitrogen fertilizer on cotton. Five genotypes (MNH-786, MNH-789, MNH-6070, CIM-496 and BH-160), three plant spacings (15, 30 and 45 cm) and three nitrogen fertilizer levels (6.5, 8.6 and 11 bags of urea ha-1) were studied. Results showed that significant differences exit for plant height, no. of bolls m-2, seed cotton yield kg ha-1 due to genotypes, interaction of genotype and plant spacing and nitrogen fertilizer levels. Where as boll weight (B. wt.), Ginning out turn percentage (G.O.T %), staple length (SL) and fiber fineness were not affected significantly by the plant spacing, nitrogen fertilizer but effect due to genotype was significant for these traits. CLCuV (Cotton leaf curl virus) infestation % varied significantly due to genotypes while all other factors i.e., plant spacing and nitrogen fertilizer has non-significant effect. As the major objective of cotton cultivation is lint production for country and seed cotton yield for the farmers, the genotypes grown in narrow plant spacing 15 cm and higher nitrogen fertilizer level 11.0 bag of urea ha-1 produced maximum seed cotton yield under higher CLCuV infestation % (CIM-496, MNH-789 and BH-160) while the variety MNH-6070 gave maximum yield under 30 cm plant spacing and 8.6 bag of urea ha-1 as the 2.3% CLCuV infestation was observed upon this variety. From the present study it is concluded that the genotypes that are severally affected by CLCuV can be managed with increasing plant population and nitrogen fertilizer to achieve optimum seed cotton yield.
  Muhammad Iqbal , Muhammad Ali Chang , Abdul Jabbar , Muhammad Zafar Iqbal , Muhammad-ul-Hassan and Noor-ul-Islam
  Certain features of gross morphology of the cotton plant furnish clues to earliness of crop production. Node of first fruiting branch (NFB), number of monopodial branch per plant (NMB), days taken to first flower, days taken to open first boll were used a morphological measures of earliness in the studies reported here. The estimation of component of variation for these characters suggested that the additive component was significant in all the traits and were greater than dominant components of variation except for seed cotton yield per plant, where the dominant components were higher in magnitude than additive. The ratio of H2/4H1 indicated asymmetry of positive and negative genes in parents for seed cotton yield and percent first pick, whereas symmetrical distribution of positive and negative genes in the parents was observed for node of first fruiting branch, number of monopodial branches per plant, days taken to first flower and days taken to open first boll. All of these traits were significantly correlated but because of its higher heritability and lower variability, node of first fruiting branch is considered the most reliable and the most practical one of these. NFB and NMB were significantly correlated phenotypically with percent first pick (earliness). From the estimates of heritability value (broad and narrow) sense it was concluded that cross Reshmi x NIAB-78, NIAB-78 x MNH-93 and S-14 x NIAB-78 are valuable crosses for improvement of early maturing traits (node of first fruiting branch, days taken to first flower, days taken to open first boll and percent first pick) with seed cotton yield.
 
 
 
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