ARPN Journal of Agricultural and Biological Science       ISSN 1990-6145
   
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ARPN Journal of Agricultural and Biological Science                           September 2018 | Vol. 13  No. 9
 
Title:

Improvement in CIMMYT maize population CZP-132011 through recurrent selection using half sib families

Author (s):

Amir Sohail, Hidayatur Rahman, Muhammad Yasir Khan, Farhatullah and Syed Mehar Ali Shah

Abstract:

Recurrent selection is a cyclic selection procedure for improving the mean performance of plant populations. The goal of current research was to determine the response of recurrent selection in CIMMYT maize population CZP-132011 using half sib families and to estimate selection differential, heritability, expected response and percent gain cycle-1 for yield attributes. Sixty four half sib recurrent families were evaluated in 8×8 lattice square design with two replication at Cereal Crops Research Institute (CCRI), Pirsabak during 2017. Results showed highly significant differences among the half sib families for all the traits. Selection differential values were positive for yield and yield attributing traits. High heritability values (h2 > 0.60) were recorded for all traits except 1000 grain weight (0.54), which exhibited moderate heritability. Based on broad sense heritability and selection differential, the expected response were positive for ears plant-1 (0.15), ear length (1.48 cm), ear diameter (0.30 cm), grain rows ear-1 (1.30), grains row-1 (2.94), 1000 grain weight (14.19 g) and grain yield (153.04 kg ha-1). After one cycle of recurrent selection using half sib families, the positive gain cycle-1 values were recorded for all the traits. Viz. Ears plant-1 (3.26%), ear length (3.06%), ear diameter (4.99%), grain rows ear-1 (2.57%), grains row-1 (7.84%), 1000 grain weight (5.87%) and grain yield (4.17%). Based on the findings of current experiment, it could be concluded that bringing improvement in half sib families through recurrent selection method was found effective and population CZP-13200 has the potential of improvement through further recurrent selection.

 
       
 
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Title:

Food quality attributes of Triticum Aestivum L. as influenced by schedules of organic and inorganic sources of nutrients

Author (s):

Mudassir Aziz, Mutunsar Tariq Abbas, Amjed Ali and Raheel Atif Hameed

Abstract:

Soil degradation is one of the major contributors of declining crop productivity. Soil fertility management is most important component for sustained crop production. Investigations were carried out in this context to study the effect of different sources of nutrients on yield and quality of wheat. The experiment was laid out in Randomized Complete Block Design with four replications at research farm of University College of Agriculture, University of Sargodha, Sargodha. Good quality seed of wheat variety named “Sehar-2006” was utilized for sowing purpose. There were five treatments which were compared for their effect on wheat yield and quality in four replicates. Treatments include (T1) recommended dose of mineral NPK,(T2) recommended dose of farm yard manure, (T3) 25% recommended dose of FYM+75% recommended dose of mineral NPK (T4) 50 % recommended dose of FYM+50% recommended dose of NPK,(T5) 75% recommended dose of FYM+25% recommended dose of mineral NPK. Data regarding different yield components and quality traits was collected and analyzed statistically. The collected data revealed that plant emergence m-2, total number of tillers m-2, plant height at maturity, spike length, number of spikelets spike-1, number of grains spike-1,1000 grain weight, biological yield, grain yield, straw yield and harvest index of wheat was significantly affected by different combinations of different doses of farm-yard manure and mineral NPK. Maximum grain yield (4700 kg ha-1) and biological yield (14470 kg ha-1) was observed in treatment where Farm-Yard manure was applied at rate of 25 % of its recommended dose along with 75 % recommended dose of mineral NPK. Maximum benefit cost ratio as well as crude protein contents of wheat were recorded in same treatment. However, maximum straw yield (10300 kg ha-1) was recorded in treatment where full recommended dose of NPK was applied alone.

 
       
 
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