Papers by Siraj Ahmed Channa
An experiment was carried out in a Randomized Complete Block Design with four replications and ei... more An experiment was carried out in a Randomized Complete Block Design with four replications and eight varieties viz. FH-114, CRIS-134, NIA Ufaq, Sohni, NIAB-777, Reshmi, Chandi and Shahbaz of upland cotton at experimental field of Nuclear Institute of Agriculture, Tandojam, during the year 2013, for assessing the correlation between yield and fiber traits in upland cotton genotypes. The observations were recorded on ginning outturn (%), staple length (mm) and micronaire value (μg/inch). Significantly maximum ginning outturn (39.27), staple length (30.37) and fiber fineness (3.95) was recorded by variety Reshmi. Correlation studies were analyzed for ginning outturn (%), staple length (mm), micronaire value (μg/inch). Results revealed that staple length was positive significantly associated with plant height, monopodial, ginning outturn which indicated that these qualitative characters can be used as reliable selection criteria to improve qualitative value of cotton.
Credit constraints and rural farmers’ welfare in an agrarian economy
Heliyon
Wheat and maize-derived water-washed and unwashed biochar improved the nutrients phytoavailability and the grain and straw yield of rice and wheat: A field trial for sustainable management of paddy soils
Journal of Environmental Management
Morphological, physiological and genetic analyses of an upward-curling leaf mutant in Brassica napus L
Acta Physiologiae Plantarum
Heterosis and combining ability analysis in Chinese semi-winter × exotic accessions of rapeseed (Brassica napus L.)
Euphytica
ABSTRACT
Twelve mutant lines developed through intraspecific crosses cum radiation-induced mutage... more ABSTRACT
Twelve mutant lines developed through intraspecific crosses cum radiation-induced mutagenesis were
evaluated along with four local check varieties Sarsabz, Kiran-95, TJ-83 and Khirman. Two mutants
MASR-3 and MASR-64 matured earlier than other entries including check varieties. Mutant MASR-64 and
MASR-6 produced higher grain yield (5420 kg ha-1 and 5380 kg ha-1). Mutant MASR-3, MASR-9, MASR-
14, and MASR-64 produced higher 1000-grain weight (45.2, 47.7, 45.7, and 45.0g, respectively). Highest
number of grains spike-1 was recorded in MASR-64 (79.9), MASR-6 (71.8) and MASR-8 (68.0). Higher
grain yield (5420 kg ha-1, 5380 kg ha-1) produced by mutant MASR-64 and MASR-6, respectively. Main
spike yield ranged between 1.9 and 4.15g. MASR-64 produced highest grains spike-1 (79.9) and highest
main spike yield (4.15g). Mutant MASR-64 has shown improvement in most of the traits. It is early
maturing, high yielding, endowed with higher number of grains spike-1 and main spike yield, hence it could
be a promising selection for future breeding.
Keywords: Early maturity, genetic variability, grain yield, mutation
ABSTRACT
A complete diallel analysis that involved 2 indigenous and 2 exotic genotypes was conduc... more ABSTRACT
A complete diallel analysis that involved 2 indigenous and 2 exotic genotypes was conducted to study the
inheritance of lint yield, ginning outturn %, staple length and fibre fineness. Differences among the genotypes
were found to be significant (P<0.01) for all the characters. The Wr/Vr graphs revealed that the characters such
as lint yield, staple length and fibre fineness were governed by additive type of gene action. Among the varieties
Chandi-95 and 8631-20 possessed most of the dominant genes. High narrow sense heritability further revealed
that selection could be very effective to improve the traits via selecting segregating generations.
Key words: Combining ability, components of variation, fibre quality, gene action, Gossypium hirsutum L.
ABSTRACT
This study was under taken to investigate the quality of ambient air in Hyderabad City a... more ABSTRACT
This study was under taken to investigate the quality of ambient air in Hyderabad City aimed to determine
the levels of air borne pollutants i.e. Particulate Matter (PM10), Sulfur dioxide (SO2), Nitrogen dioxide (NO2),
Carbon monoxide (CO), Ozone (O3) and toxic metals at five site of different environmental back drops. GMW
PM10 High Volume Air Sampler – Volumetric was used to trap PM10 using gravimetric method. Ozone O3 was
determined (as per ASTMD). SO2 was determined based on West-Gaeke method (as per ISO 6767). For the
determination of mass concentration of NO2, Modified Griess-Saltzman method (as per ISO 6768) was used.
CO meter was used for CO measurements. The results showed that all the studied parameters were remained out
of compliance with WHO stipulations at all sampling sites. Transport sector is the significant contributor of air
quality debacle in the Hyderabad city especially two stroke engines. There is need to encourage local urban
dwellers to use bicycle or walk to travel short distances, widening of congested city roads, proper sanitation,
strict monitoring fuel adulteration, and regular vehicular inspection. There is an urgent need of efficient public
road transport system to reduce dependency on personal vehicles that will bring some improvement in
deteriorated ambient air quality in Hyderabad city.
Key words: Ambient Air, Hyderabad City, Pakistan, Deterioration
ABSTRACT: An investigation was done on correlation and heritability analysis for 09 characters on... more ABSTRACT: An investigation was done on correlation and heritability analysis for 09 characters on 20 advance
bread wheat cultivars which were grown in randomized complete block design with three replications during rabi,
2012-13. The trait grain yield per plant made positive and significant association with productive tillers per plant,
spike length, spikelets per spike, grains per spike, seed index, total biomass and harvest index. Indicating a thorough
selection for these traits will automatically improve seed yield in wheat because the five yield contributing traits are
associated among themselves, selection in one of the traits will wholly result in the improvement of the other traits.
Significant and negative correlation was revealed by plant height with productive tillers per plant, spike length,
spikelets per spike and seed index, suggesting that dwarf wheat genotypes are by and large good yielders. High
heritability estimates were observed for seed index, total biomass, grains per spike and plant height, indicating that
these traits were predominantly controlled by additive gene effects and direct selection may be effective for these
traits.
Abstract Participatory oriented actions were taken in district Tharparkar (South-eastern Pakistan... more Abstract Participatory oriented actions were taken in district Tharparkar (South-eastern Pakistan) to combat desertification effects through conserving Commiphora wightii, an endangered medicinal plant and local biodiversity protectionat large scale. Synergies of various stakeholders at different levels were undertaken to strengthen local ecosystem conservation projects in Nagarparkar area of district Tharparkar by involving indigenous communities through in-situ Commiphora wightii proliferation, plantation and awareness raising programmes. Optimistic results were achieved from local communities’ participation in various activities, plantation of 4250 Commiphora wightii(three and half months old)was carried out through vegetative cuttings at the selected natural rangeland sites in the study area.
A study was conducted in the Department of Plant Breeding and Genetics,
Sindh Agriculture Univers... more A study was conducted in the Department of Plant Breeding and Genetics,
Sindh Agriculture University, Tandojam, Pakistan during the year 2009. Sixteen
spring wheat cultivars (Triticum aestivum L.) were screened under osmotic
stress with three treatments i.e. control-no PEG (polyethylene glycol), 15
percent and 25 percent PEG-6000 solution. The analysis of variance indicated
significant differences among treatments for all seedling traits except seed
germination percentage. Varieties also differed significantly in germination
percentage, coleoptile length, shoot root length, shoot weight, root/shoot ratio
and seed vigour index. However, shoot and root weights were non-significant.
Significant interactions revealed that cultivars responded variably to osmotic
stress treatments; hence provided better opportunity to select drought tolerant
cultivars at seedling growth stages. The relative decrease over averages due to
osmotic stress was 0.8 percent in seed germination, 53 percent in coleoptile
length 62.9 percent in shoot length, 74.4 percent in root length, 50.6 percent in
shoot weight, 45.1 percent in root weight, 30.2 percent in root/shoot ratio and
68.5 percent in seed vigour index. However, relative decrease of individual
variety for various seedling traits could be more meaningful which indicated
that cultivar TD-1 showed no reduction in coleoptile length, while minimum
decline was noted in Anmol. For shoot length, cultivar Sarsabz expressed
minimum reduction followed by Anmol. However, cultivars Anmol, Moomal,
Inqalab-91, and Pavan gave almost equally lower reductions for root length
suggesting their higher stress tolerance. In other words, cultivars Anmol,
Moomal, Inqalab-91, Sarsabz, TD-1, ZA-77 and Pavan had relatively longer
coleoptiles, shoots and roots, and were regarded as drought tolerant.
Correlation coefficients among seedlings traits were significant and positive
for all traits except germination percentage which had no significant
correlation with any of other trait. The results indicated that increase in one
trait may cause simultaneous increase in other traits; hence selection for any
of these seedling attributes will lead to develop drought tolerant wheat
cultivars.
KEYWORDS: Triticum aestivum; cultivars; seedlings; osmotic pressure;
stress; Pakistan.
*Department of Plant Breeding and Genetics, Sindh Agriculture University, Tan
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Papers by Siraj Ahmed Channa
Twelve mutant lines developed through intraspecific crosses cum radiation-induced mutagenesis were
evaluated along with four local check varieties Sarsabz, Kiran-95, TJ-83 and Khirman. Two mutants
MASR-3 and MASR-64 matured earlier than other entries including check varieties. Mutant MASR-64 and
MASR-6 produced higher grain yield (5420 kg ha-1 and 5380 kg ha-1). Mutant MASR-3, MASR-9, MASR-
14, and MASR-64 produced higher 1000-grain weight (45.2, 47.7, 45.7, and 45.0g, respectively). Highest
number of grains spike-1 was recorded in MASR-64 (79.9), MASR-6 (71.8) and MASR-8 (68.0). Higher
grain yield (5420 kg ha-1, 5380 kg ha-1) produced by mutant MASR-64 and MASR-6, respectively. Main
spike yield ranged between 1.9 and 4.15g. MASR-64 produced highest grains spike-1 (79.9) and highest
main spike yield (4.15g). Mutant MASR-64 has shown improvement in most of the traits. It is early
maturing, high yielding, endowed with higher number of grains spike-1 and main spike yield, hence it could
be a promising selection for future breeding.
Keywords: Early maturity, genetic variability, grain yield, mutation
A complete diallel analysis that involved 2 indigenous and 2 exotic genotypes was conducted to study the
inheritance of lint yield, ginning outturn %, staple length and fibre fineness. Differences among the genotypes
were found to be significant (P<0.01) for all the characters. The Wr/Vr graphs revealed that the characters such
as lint yield, staple length and fibre fineness were governed by additive type of gene action. Among the varieties
Chandi-95 and 8631-20 possessed most of the dominant genes. High narrow sense heritability further revealed
that selection could be very effective to improve the traits via selecting segregating generations.
Key words: Combining ability, components of variation, fibre quality, gene action, Gossypium hirsutum L.
This study was under taken to investigate the quality of ambient air in Hyderabad City aimed to determine
the levels of air borne pollutants i.e. Particulate Matter (PM10), Sulfur dioxide (SO2), Nitrogen dioxide (NO2),
Carbon monoxide (CO), Ozone (O3) and toxic metals at five site of different environmental back drops. GMW
PM10 High Volume Air Sampler – Volumetric was used to trap PM10 using gravimetric method. Ozone O3 was
determined (as per ASTMD). SO2 was determined based on West-Gaeke method (as per ISO 6767). For the
determination of mass concentration of NO2, Modified Griess-Saltzman method (as per ISO 6768) was used.
CO meter was used for CO measurements. The results showed that all the studied parameters were remained out
of compliance with WHO stipulations at all sampling sites. Transport sector is the significant contributor of air
quality debacle in the Hyderabad city especially two stroke engines. There is need to encourage local urban
dwellers to use bicycle or walk to travel short distances, widening of congested city roads, proper sanitation,
strict monitoring fuel adulteration, and regular vehicular inspection. There is an urgent need of efficient public
road transport system to reduce dependency on personal vehicles that will bring some improvement in
deteriorated ambient air quality in Hyderabad city.
Key words: Ambient Air, Hyderabad City, Pakistan, Deterioration
bread wheat cultivars which were grown in randomized complete block design with three replications during rabi,
2012-13. The trait grain yield per plant made positive and significant association with productive tillers per plant,
spike length, spikelets per spike, grains per spike, seed index, total biomass and harvest index. Indicating a thorough
selection for these traits will automatically improve seed yield in wheat because the five yield contributing traits are
associated among themselves, selection in one of the traits will wholly result in the improvement of the other traits.
Significant and negative correlation was revealed by plant height with productive tillers per plant, spike length,
spikelets per spike and seed index, suggesting that dwarf wheat genotypes are by and large good yielders. High
heritability estimates were observed for seed index, total biomass, grains per spike and plant height, indicating that
these traits were predominantly controlled by additive gene effects and direct selection may be effective for these
traits.
Sindh Agriculture University, Tandojam, Pakistan during the year 2009. Sixteen
spring wheat cultivars (Triticum aestivum L.) were screened under osmotic
stress with three treatments i.e. control-no PEG (polyethylene glycol), 15
percent and 25 percent PEG-6000 solution. The analysis of variance indicated
significant differences among treatments for all seedling traits except seed
germination percentage. Varieties also differed significantly in germination
percentage, coleoptile length, shoot root length, shoot weight, root/shoot ratio
and seed vigour index. However, shoot and root weights were non-significant.
Significant interactions revealed that cultivars responded variably to osmotic
stress treatments; hence provided better opportunity to select drought tolerant
cultivars at seedling growth stages. The relative decrease over averages due to
osmotic stress was 0.8 percent in seed germination, 53 percent in coleoptile
length 62.9 percent in shoot length, 74.4 percent in root length, 50.6 percent in
shoot weight, 45.1 percent in root weight, 30.2 percent in root/shoot ratio and
68.5 percent in seed vigour index. However, relative decrease of individual
variety for various seedling traits could be more meaningful which indicated
that cultivar TD-1 showed no reduction in coleoptile length, while minimum
decline was noted in Anmol. For shoot length, cultivar Sarsabz expressed
minimum reduction followed by Anmol. However, cultivars Anmol, Moomal,
Inqalab-91, and Pavan gave almost equally lower reductions for root length
suggesting their higher stress tolerance. In other words, cultivars Anmol,
Moomal, Inqalab-91, Sarsabz, TD-1, ZA-77 and Pavan had relatively longer
coleoptiles, shoots and roots, and were regarded as drought tolerant.
Correlation coefficients among seedlings traits were significant and positive
for all traits except germination percentage which had no significant
correlation with any of other trait. The results indicated that increase in one
trait may cause simultaneous increase in other traits; hence selection for any
of these seedling attributes will lead to develop drought tolerant wheat
cultivars.
KEYWORDS: Triticum aestivum; cultivars; seedlings; osmotic pressure;
stress; Pakistan.
*Department of Plant Breeding and Genetics, Sindh Agriculture University, Tan