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RISS 인기검색어
- 검색키워드
- 저자 : Saeed Rauf (검색결과 3 건)
- 무료
- 기관 내 무료
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Biomass Partitioning and Genetic Analyses of Salinity Tolerance in Sunflower (Helianthus annuus L.)
Rauf, Saeed,Shahzad, Muhammad,da Silva, Jaime A. Teixeira,Noorka, Ijaz Rasool 한국작물학회 2012 Journal of crop science and biotechnology Vol.15 No.3
Biomass partitioning was studied in sunflower (Helianthus annuus L.) inbred lines and their hybrids differing in salinity resistance. Differential biomass partitioning was observed among resistant and susceptible lines as well as within resistant lines, which were grown in large pots. Traits such as number of dead leaves and total number of nodes may be used as dominant markers for understanding the mechanism of resistance to salinity. Multi-location trials differing for salinity levels showed low and non-significant heritabilities across the environment for biochemical traits showing their sensitivity to the environment and a significant G ${\times}$ E interaction. Thus selection could only possible within the salinity level for these traits. Contrastingly, morphological traits such as number of nodes showed significant heritabilities (narrow or broad sense) across the environment. These traits may be exploited by the selection of inbred lines across or with salinity levels. Among various salinity levels, 12 $dSm^{-1}$ was found to be feasible for screening and selection as it promoted the additive type of gene action.
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Biomass Partitioning and Genetic Analyses of Salinity Tolerance in Sunflower (Helianthus annuus L.)
Saeed Rauf,Muhammad Shahzad,Jaime A. Teixeira da Silva,Ijaz Rasool Noorka 한국작물학회 2012 Journal of crop science and biotechnology Vol.15 No.3
Biomass partitioning was studied in sunflower (Helianthus annuus L.) inbred lines and their hybrids differing in salinity resistance. Differential biomass partitioning was observed among resistant and susceptible lines as well as within resistant lines, which were grown in large pots. Traits such as number of dead leaves and total number of nodes may be used as dominant markers for understanding the mechanism of resistance to salinity. Multi-location trials differing for salinity levels showed low and non-significant heritabilities across the environment for biochemical traits showing their sensitivity to the environment and a significant G X E interaction. Thus selection could only possible within the salinity level for these traits. Contrastingly, morphological traits such as number of nodes showed significant heritabilities (narrow or broad sense) across the environment. These traits may be exploited by the selection of inbred lines across or with salinity levels. Among various salinity levels, 12 dSm-1 was found to be feasible for screening and selection as it promoted the additive type of gene action.
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Nest preference and ecology of cavity-nesting bees (Hymenoptera: Apoidea) in Punjab, Pakistan
Rauf Abdur,Saeed Shafqat,Ali Mudssar,Tahir Muhammad Hammad Nadeem 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.2
Among bees, 85 % are solitary species, most of them are ground-nester and some are cavity-nesting and construct their nests in pre-existing cavities. This work was conducted to evaluate the substrate preference and nest ar chitecture (acceptance, occupation percentage, seasonality and parasitism) of cavity-nesting bees in different substrates. Trap nests offered comprised five different materials (drilled cavities in wood, bamboo, cardboard tubes, plastic soda straws, and mud blocks). These were installed in four districts for two years. The nesting cavities of five different diameters (6, 8, 10, 12 and 14 mm) were provided in each nesting material with an average length of 180 ± 9.92 mm. In all the materials, 5400 nesting cavities were offered, out of which 628 were colonized by bees from two families (Megachilidae and Apidae) and six species (Megachile cephalotes, M. lanata, M. bicolor, Xylocopa basalis, X. fenestrata and Ceratina smaragdula), including one parasitic bee (Euaspis carbo naria). The bee species differed significantly in occupying five nesting materials. The most preferred diameters were 8 mm and 10 mm, with 52.20% and 29.45% of colonization, respectively. Nesting was done throughout the year except in winter. This study will serve as a baseline for future studies and conservation programs of cavitynesting bees in Pakistan.
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