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| ARPN Journal of Agricultural and Biological
Science September 2018 | Vol. 13 No.
9 |
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Title: |
Improvement in CIMMYT maize
population CZP-132011 through recurrent selection using half
sib families |
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Author (s): |
Amir Sohail, Hidayatur Rahman,
Muhammad Yasir Khan, Farhatullah and Syed Mehar Ali Shah |
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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 |
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Author (s): |
Mudassir Aziz, Mutunsar Tariq
Abbas, Amjed Ali and Raheel Atif Hameed |
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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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