Sally Brooks: Rice biofortification: lessons for global science and development     

Atif Kamran  Muhammad Asif 《Agriculture and Human Values》2013,30(1):143-144

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Triple test cross analysis for some morphological traits in mungbean (Vigna radiata (L.) Wilczek)     

G.S.S. Khattak  M.A. Haq  M. Ashraf  G.R. Tahir 《Euphytica》2002,126(3):413-420

Thirty progenies of mungbean were produced by crossing 10 true-breeding genotypes with three testers (NM 92, 6601, and their F₁) in a Triple Test cross (TTC) fashion and evaluated with parents in the kharif (July-October) and spring/summer (March-June) seasons. The data on parents and F₁s were analysed for pod clusters on main stem, pod clusters on branches, node of the first peduncle, nodes on main stem and average internode length to detect epistasis and estimate additive and dominance components of genetic variation. Epistasis was observed for node of the first peduncle and nodes on main stem in the kharif season. Partitioning of total epistasis revealed that both additive × additive (i type), and additive × dominance, and dominance × dominance (j and l types) interactions were significant with prevalent influence of i type interactions on these traits. Both additive and dominance components of genetic variation were significant for all those traits not significantly influenced by epistasis in either or both seasons. The additive component was predominant for pod clusters on main stem, pod clusters on branches and average internode length in the kharif season, and for the node of the first peduncle and nodes on main stem in spring/summer season whereas dominance component was important for pod clusters on main stem, pod clusters on branches, and average internode length in spring/summer season. These results suggested that particular generation of segregating population and specific breeding method for selection might be adopted in each season for the improvement of these traits in mungbean. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献   

Identification of a molecular marker linked to an Agropyron elongatum-derived gene Lr19 for leaf rust resistance in wheat     

D. P. Cherukuri    S. K. Gupta    A. Charpe    S. Koul    K. V. Prabhu    R. B. Singh    Q. M. R. Haq  S. V. S. Chauhan  W.E. Weber 《Plant Breeding》2003,122(3):204-208

The leaf rust resistance gene Lr19, transferred from Agropyron elongatum into wheat (Triticum aestivum L.) imparts resistance to all pathotypes of leaf rust (Puccinia recondita f.sp. tritici) in South‐east Asia. A segregating F₂ population from a cross between the leaf rust resistant parent ‘HW 2046’ carrying Lr19 and a susceptible parent ‘Agra Local’ was screened in the phytotron against a virulent pathotype 77‐5 of leaf rust with the objective of identifying the molecular markers linked to Lr19. The gene was first tagged with a randomly amplified polymorphic DNA (RAPD) marker S73₇₂₈. The RAPD marker linked to the gene Lr19 which mapped at 6.4 ± 0.035 cM distance, was converted to a sequence characterized amplified region (SCAR) marker. The SCAR marker (SCS73₇₁₉) was specific to Lr19 and was not amplified in the near‐isogenic lines (NILs) carrying other equally effective alien genes Lr9, Lr28 and Lr32 enabling breeders to pyramid Lr19 with these genes.  相似文献   

Fertility and segregation of the amphidiploid Phaseolus vulgaris L. x P. coccineus L. and its behaviour in backcrosses     

J. Smartt  Nazmul Haq 《Euphytica》1972,21(3):496-501

Summary Amphidiploidy was induced by colchicine treatment of cuttings from the F₁ interspecific hybrid Phaseolus vulgaris L. x Ph. coccineus L.. Pollen stainability rose from about 50% in the raw amphidiploid to 76% in some C₅ individuals; similar improvement in seed fertility was also observed. It is suggested that both genic and chromosomal factors are implicated in the control of fertility in the amphidiploid.The amphidiploid is apparently unable to cross successfully with either parental species; difference in ploidy level is apparently an effective isolating mechanism between the amphidiploid and its parents.  相似文献   

Functional properties of protein isolates extracted from stabilized rice bran by microwave, dry heat, and parboiling     

Khan SH  Butt MS  Sharif MK  Sameen A  Mumtaz S  Sultan MT 《Journal of agricultural and food chemistry》2011,59(6):2416-2420

Protein isolates extracted from differently stabilized rice bran were analyzed to work out the food use potential. Bulk density remained higher for isolates obtained from heat stabilized bran, the treatments were found to have positive impact on the oil absorption properties, while the water absorption was slightly impaired owing to some possible configurational changes. Surface hydrophobicity and emulsion properties were improved with bran stabilization. Isolates exhibited better foaming properties owing to the flexible nature of protein molecules, with less intensive disulfide bonding, that were slightly affected by the stabilization treatment. Nitrogen solubility index followed a curved pattern with the least value near isoelectric point that showed an increasing trend toward basic pH, and parboiled protein isolates exhibited better gelling properties among the isolates.  相似文献   

Evaluation of a modified acetaminophen absorption test to estimate the abomasal emptying rate in Holstein-Friesian heifers     

Ehsani-Kheradgerdi A  Sharifi K  Mohri M  Grünberg W 《American journal of veterinary research》2011,72(12):1600-1606

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Variation in baobab seedling morphology and its implications for selecting superior planting material     

A. Cuni Sanchez  S. De Smedt  N. Haq  R. Samson 《Scientia Horticulturae》2011

With the aim of helping to select superior planting material for drought characteristics, baobab seedlings from two countries, one in western and one in south-eastern Africa, were grown in a greenhouse and their growth and morphology were studied. Seedlings were grown for 18 weeks and several morphological characteristics (length, diameter and dry weights of different plant parts, number of leaves, stomatal density, among others) were recorded at different harvesting times. Biomass allocation changed with time: seedlings invested more in fine roots and leaves in the beginning of their growth while later they invested more in the development of the taproot. In general, at any harvest time, seedlings from Malawi were larger; but seedlings from Mali had higher relative growth rates and a faster ontogeny. Seedlings from Mali had shorter hypocotyls, their stems were thicker, they had fewer leaves, lower leaf area ratios and, in general, they had a higher stomatal density than those from Malawi. Significant differences between provenances within one country could also be observed. In general, seedlings from drier provenances were smaller overall, they had fewer leaves, higher taproot water content and stomatal density, characteristics often related to drought adaptation. Seedlings from drier provenances also invested more in their taproot, a key organ for baobab seedling survival. Although our seedlings were only grown under optimal conditions in a greenhouse, results from this study indicate that there is a great variation in baobab seedling growth, biomass allocation to plant parts and morphology, which gives opportunities to select high quality planting material.  相似文献   

Immunostimulatory and protective effects of Aloe vera against coccidiosis in industrial broiler chickens     

Akhtar M  Hai A  Awais MM  Iqbal Z  Muhammad F  ul Haq A  Anwar MI 《Veterinary parasitology》2012,186(3-4):170-177

This paper reports the immunostimulatory and protective effects of Aloe vera extracts (aqueous and ethanolic) against coccidiosis in industrial broiler chickens. The study was divided into two experiments. Experiment-I was conducted for the evaluation of immunostimulatory activity of A. vera and experiment-II demonstrated the protective efficacy of A. vera extracts against coccidiosis in chickens. Results of the experiment-I revealed significantly higher (p<0.05) lymphoproliferative responses in chickens administered with ethanolic extract of A. vera as compared to those administered with aqueous extract and control group. Microplate haemagglutination assay for humoral response on day 7th and 14th post primary and secondary injections of sheep red blood cells (SRBCs) revealed significantly higher (p<0.05) anti SRBC antibody (total Igs, IgG and IgM) titers in chickens of experimental groups as compared to the control group. None of the extracts, however, demonstrated significant effects on the development of lymphoid organs. Results of experiment-II revealed maximum protection (60%) in chickens administered with aqueous Aloe extract as compared to the ethanolic extract administered chickens (45%). Mean oocysts per gram of droppings in the control group was significantly higher (p<0.05) as compared to the chickens in both the experimental groups. Chickens administered with aqueous Aloe extract showed a minimal mean lesion score (2.3) followed by those administered with ethanolic Aloe extract (2.6) and control chickens (3.05) for caeca, and a similar pattern was observed for intestinal lesion scoring. Further, significantly higher weight gains and antibody titers (p<0.05) were observed in chickens administered with A. vera extracts as compared to those in the control group. It was concluded that A. vera may be a potential and valuable candidate to stimulate the immune responses and can be used successfully as an immunotherapeutic agent against coccidiosis in industrial broiler chickens.  相似文献   

New report of Alternaria alternata causing leaf blight of tomato in Pakistan     

K. P. Akhtar  M. Y. Saleem  M. Asghar  M. A. Haq 《Plant pathology》2004,53(6):816-816

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Natural occurrence of phytoplasma associated with chickpea phyllody disease in Pakistan – a new record     

K. P. Akhtar  T. M. Shah  B. M. Atta  M. Dickinson  F. F. Jamil  M. A. Haq  S. Hameed  M. J. Iqbal 《Plant pathology》2008,57(4):771-771

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