scholarly journals Keragaan Sifat Tahan Penyakit Blas dan Agronomi Populasi Silang Balik dan Haploid Ganda Turunan IR64 dan Oryza rufipogon

2016 ◽  
Vol 16 (2) ◽  
pp. 90
Author(s):  
Dwinita W. Utami ◽  
A. Dinar Ambarwati ◽  
Aniversari Apriana ◽  
Atmitri Sisharmini ◽  
Ida Hanarida ◽  
...  
Keyword(s):  
Double Haploid ◽  
Blast Resistance ◽  
Oryza Rufipogon ◽  
Screening Tests ◽  
Recurrent Parent ◽  
Wild Rice Species ◽  
Backcross Populations ◽  
Haploid Population ◽  
The One ◽  
Resistance Performance

<p>Blast Resistance Performance of Promising Lines Derived from Backcross and Double Haploid Population Between IR64 and Oryza rufipogon. Developing blast resistance varieties with superior agronomical performance has been the one of the important priorities in rice breeding program. Based on the purpose of this study the double haploid and backcross populations were developed using the most popular cultivar IR64 as recurrent parent and wild rice species Oryza rufipogon (Acc. IRGC 105491) as blast resistance donor parent. This study was initiated to analyze the blast resistance and agronomical performance of double haploid populations (DH_I, DH_II and DH_III) and backcross populations (BC2, BC3, and BC5), based on the green house and field screening tests. The results of statistical analysis showed that the blast resistance performance of DH population were diverse among DH_I, DH_II and DH_III. The smallest diversity was on the DH_III population. The same results were also detected on BC populations. The smallest diversity was on BC5 population. The diversity comparison between DH and BC population showed that DH_III population had smaller variation than BC5. Indicated that DH_III population has the most fixed population. The agronomic performance evaluation of DH_III population selected lines showed that Bio1, Bio2, and Bio8 qualitified as the candidate of promising lines.</p><p> </p><p><strong>Abstrak</strong></p><p>Perakitan varietas tahan blas sebagai galur harapan, merupakan salah satu prioritas dalam program pemuliaan padi. Dalam rangka mendukung program tersebut, telah dilakukan pembentukan populasi haploid ganda (HG) dan silang balik (BC) dengan IR64 sebagai tetua berulang dan Oryza rufipogon (No. aksesi IRGC 105491) sebagai tetua donor gen tahan penyakit blas. Penelitian ini bertujuan menganalisis keragaan tingkat ketahanan galur-galur haploid ganda (HG_I, HG_II, dan HG_III) dan galur-galur silang balik (BC2, BC3, dan BC5) terhadap penyakit blas di rumah kaca dan lapang, sehingga diperoleh kandidat galur harapan. Hasil pengujian beberapa populasi HG dan BC menunjukan bahwa terdapat variasi keragaan yang berbeda-beda. Variasi paling kecil terdapat pada populasi HG_III. Hasil yang sama juga diperoleh pada populasi silang balik (BC2-BC5). Variasi paling kecil terdapat pada populasi BC5. Bila dibandingkan antar populasi HG dan BC, tingkat variasi pada populasi HG_III lebih kecil dibandingkan dengan tingkat variasi pada populasi BC5. Hal ini menunjukkan bahwa tingkat homosigositas paling tinggi terdapat pada populasi HG_III. Berdasarkan evaluasi penampilan agronomis beberapa galur HG_III terpilih, diperoleh tiga galur kandidat galur harapan Bio1, Bio2, dan Bio8.</p>

scholarly journals Spektrum Ketahanan Galur Haploid Ganda Turunan IR64 dan Oryza rufipogon yang mengandung QTL Ketahanan terhadap Penyakit Blas (Pir)

2016 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Dwinita Wikan Utami ◽  
Alberta Dinar Ambarwati ◽  
Aniversari Apriana ◽  
Atmitri Sisharmini ◽  
Ida Hanarida ◽  
...  
Keyword(s):  
Double Haploid ◽  
Wild Rice ◽  
Blast Resistance ◽  
Oryza Rufipogon ◽  
Chromosome 2 ◽  
Backcross Population ◽  
Wild Rice Species ◽  
Dh Lines ◽  
Resistance Spectrum ◽  
Avr Gene

<p>Resistance Spectrum of Double Haploid Lines Derived<br />from IR64 and Wild Rice Species, Oryza rufipogon<br />Contained the Blast Resistance QTL (Pir). Dwinita W.<br />Utami, A. Dinar Ambarwati, Aniversari Apriana, Atmitri<br />Sisharmini, Ida Hanarida, Didier Tharreau, and Santosa.<br />This study was initiated to determine the spectrum resistance<br />of the candidate durable blast resistance variety contained<br />the QTL (quantitative trait locus), Pir1 and 2. This QTL<br />was mapped on chromosome 2 detected using the advanced<br />backcross population (BC5) from the wild rice species<br />Oryza rufipogon to IR64. Pir (1 and 2) also established<br />on double haploid (DH) population derived from the selected<br />lines of BC2F3 population, progenies from the same<br />parents. The DH lines were developed to speed up the fixation<br />process of the recessive alleles in the selected lines.<br />Near isogenic lines with different blast resistance genes and<br />combination were used in this study comparing to the DH<br />population on their resistance spectrum using the known<br />avr gene isolates both on green house and field screening.<br />The determination of the resistance spectrum will useful on<br />the prediction of durability of blast resistance gene in DH<br />population. The results of spectrum resistance test in green<br />house and field showed that Pir1and Pir2 segregated on 1 : 1<br />proportion related with specific respond to blast avr gene<br />PH14 and CM28 resistance. Pir1 was identic to Pi33 or Pi25<br />and Pir2 to Pitq5 on spectrum resistance.<br /><br /></p>

Genome wide analysis of recurrent parent genome recovery in different backcross populations for blast resistance through SSR markers in rice

2019 ◽  
Vol 51 (6) ◽  
Author(s):  
Tanweer Fatah Abro ◽  
Mohd Rafiiyusop ◽  
Zahoor Ahmed Soomro ◽  
Abdul Wahid Baloch ◽  
Piar Ali Shar ◽  
...  
Keyword(s):  
Ssr Markers ◽  
Blast Resistance ◽  
Recurrent Parent ◽  
Recurrent Parent Genome ◽  
Genome Wide Analysis ◽  
Genome Wide ◽  
Backcross Populations

Your Baby's First Year, 4th Ed - Spanish

2017 ◽  
Author(s):  
Keyword(s):  
Child Care ◽  
Maternal Nutrition ◽  
Screening Tests ◽  
First Year ◽  
Congenital Diseases ◽  
Safety Standards ◽  
Car Safety ◽  
Complete Health ◽  
Nutritional Needs ◽  
The One

The one guide pediatricians most recommend is now completely revised, updated and available in Spanish. From the American Academy of Pediatrics, the nation's most trusted name in child care, comes El primer año de su bebe , the definitive all-in-one resource that provides authoritative advice on every aspect of infant care. Featuring new and expanded content, including the latest reports on cutting-edge research into early brain development, Your Baby's First Year includes Guidelines for prenatal care, with spotlights on maternal nutrition, exercise, and screening tests during pregnancy Growth and developmental milestones through the first twelve months of a child's life, including physical, emotional, and cognitive development An updated chapter on developmental disabilities A complete health encyclopedia covering injuries, illnesses, and congenital diseases Breastfeeding discussion, including its benefits, techniques, and challenges, as well as nutritional needs and vitamin/iron supplementation Recommendations for choosing child care programs Updated safety standards: the very latest AAP recommendations, including immunizations, childproofing, and toy safety Safety checks for home, including bathing, preventing drowning, poisoning, choking, burns, and falls Car safety, including information on car safety seats And much more

scholarly journals Blast-Resistant Performance of Hybrid Fiber-Reinforced Concrete (HFRC) Panels Subjected to Contact Detonation

2019 ◽  
Vol 10 (1) ◽  
pp. 241
Author(s):  
Wenjin Yao ◽  
Weiwei Sun ◽  
Ze Shi ◽  
Bingcheng Chen ◽  
Le Chen ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Blast Resistance ◽  
Plain Concrete ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Hybrid Fiber ◽  
Hybrid Effect ◽  
Pva Fiber ◽  
Resistance Performance

This paper experimentally investigates the blast-resistant characteristics of hybrid fiber-reinforced concrete (HFRC) panels by contact detonation tests. The control specimen of plain concrete, polypropylene (PP), polyvinyl alcohol (PVA) and steel fiber-reinforced concrete were prepared and tested for characterization in contrast with PP-Steel HFRC and PVA-Steel HFRC. The sequent contact detonation tests were conducted with panel damage recorded and measured. Damaged HFRC panels were further comparatively analyzed whereby the blast-resistance performance was quantitively assessed via damage coefficient and blast-resistant coefficient. For both PP-Steel and PVA-Steel HFRC, the best blast-resistant performance was achieved at around 1.5% steel + 0.5% PP-fiber hybrid. Finally, the fiber-hybrid effect index was introduced to evaluate the hybrid effect on the explosion-resistance performance of HFRC panels. It revealed that neither PP-fiber or PVA-fiber provide positive hybrid effect on blast-resistant improvement of HFRC panels.

CORROSION INHIBITORS IN OIL AND GAS PRODUCING EQUIPMENT

1972 ◽  
Vol 12 (1) ◽  
pp. 99
Author(s):  
Roy D. Stanphill ◽  
R.W. Gibson
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Field Conditions ◽  
Screening Tests ◽  
Inhibitor Efficiency ◽  
Organic Corrosion Inhibitor ◽  
The One ◽  
Specific Formulation ◽  
Selection Of

Most internal corrosive conditions found in oil and gas producing equipment can be controlled through the use of corrosion inhibitors. Organic corrosion inhibitor chemistry is now well known and inhibition mechanisms are understood. There are many good inhibitor formulations available today; so many, in fact, that the producer is faced with the problem of selecting the one best suited to his requirements. Many people depend solely on various types of comparative inhibitor efficiency tests in the laboratory to evaluate and select inhibitors for use under field conditions. These tests are important as relative screening tests, but the selection of a carefully planned application program for the specific formulation is equally important.

scholarly journals Molecular marker aided breeding for blast resistant rice in Nepal

2014 ◽  
Vol 15 ◽  
pp. 128-138
Author(s):  
Bal K Joshi ◽  
Hari P Bimb ◽  
Gopal Parajuli ◽  
Bedanand Chaudhary
Keyword(s):  
Resistance Gene ◽  
Ssr Markers ◽  
Bulked Segregant Analysis ◽  
Blast Resistance ◽  
Hot Spot ◽  
Resistance Breeding ◽  
Recurrent Parent ◽  
Simple Method ◽  
Multiple Alleles ◽  
Rice Landraces

Molecular markers tightly linked to target gene have been identified in different chromosomes to impose the genetic selection. This paper summarizes the progress and achievement made in breeding for blast resistance rice based on DNA markers. At least 40 genes conferring resistance to blast isolates with multiple alleles have been described. Both dominant and recessive resistance alleles have been found in many rice landraces. Highly polymorphic and easily detectable SSR markers are being used in breeding for blast resistance. Bulked segregant analysis (BSA) is the simple method for tagging resistance gene by SSR markers. Quantitative trait loci (QTLs) have also been mapped and most of them are linked to qualitative genes. Simple sequence repeat (SSR) markers linked to the gene are being used to select plants possessing the desired trait and markers throughout the genome are being used to select plants that are genetically similar to recurrent parent. Using SSR markers it may be possible to select blast resistance genotypes at any stage of crop development from any small part of crop, to conduct many round of selection, to select without inoculums, without scoring, and without testing in hot spot or artificial inoculation. Molecular based blast resistance breeding work is necessary to initiate in Nepal focusing on resistance gene tagging in Nepalese rice landraces and utilization.

Identification of the blast resistance gene Picl(t) from Chaling common wild rice ( Oryza rufipogon Griff.)

2020 ◽  
Vol 168 (4) ◽  
pp. 211-219
Author(s):  
Chuanqin Zheng ◽  
Nan Jiang ◽  
Xinhui Zhao ◽  
Tianze Yan ◽  
Jun Fu ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Wild Rice ◽  
Blast Resistance ◽  
Oryza Rufipogon ◽  
Blast Resistance Gene ◽  
Common Wild Rice ◽  
Oryza Rufipogon Griff
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