Search results
3 result(s) search for keyword(s) ''gene''
Molecular screening for rust resistance characteristics in Nepalese barley germplasm. / Madan Raj Bhatta
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Title : Molecular screening for rust resistance characteristics in Nepalese barley germplasm. Material Type: printed text Authors: Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Sah, Bindeshwar P., Author Publisher: Lalitpur : Nepal Agriculture Research Council (NARC) Publication Date: 2012 Pagination: 35-43 p. Languages : English (eng) Keywords: 'stripe rust', 'Puccinia', 'resistant', 'durable', 'gene' Abstract: Leaf rust ( caused by Puccinia hordei) and stripe/yellow rust ( caused by P. striformis fsp. hordei and P. striformis fsp. tritici) are the major problem for barley cultivation in Nepal. Durable resistant variety of the barley is highly important for this country. Barley rust resistance is controlled by many major genes and quantitative trait loci (QTLs) and pyramiding these genes into varieties is the most important barley breeding strategies in Nepal. Molecular marker assisted breeding (MAB) is the only option for this. Marker assisted screening is the primary stage to initiate the MAB. One hundred and nine Nepalese barley accessions were screened using six and eleven SSR markers linked to leaf rust and stripe rust resistance genes respectively. Bonus and Local Jau was used as the resistant and susceptible check respectively. Leaf rust resistance gene Rphl, Rph2, Rph3, Rph7, QBLR-P and QTL on 5HS was detected on Nepalese barley accessions using respective SSR markers. Similarly, stripe rust resistance genes QTL on lH, QTL5 on lH, QTL on 4H, QTL on SH, QTL on 6H, QTL on 7H, YrpstYl and Rpsx were detected. Eight Nepalese barley accessions showed presence of three and more leaf rust resistant genes and twenty-five Nepalese barley accessions have three and more stripe rust resistance genes. Poor relationship between rust resistance gene and field disease may be due to the less relationship between the pathogen type on field and rust resistance genes detected using SSR markers on Nepalese barley germplasm.
Link for e-copy: http://elibrary.narc.gov.np/?r=1491 Molecular screening for rust resistance characteristics in Nepalese barley germplasm. [printed text] / Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Sah, Bindeshwar P., Author . - Lalitpur : Nepal Agriculture Research Council (NARC), 2012 . - 35-43 p.
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Languages : English (eng)
Keywords: 'stripe rust', 'Puccinia', 'resistant', 'durable', 'gene' Abstract: Leaf rust ( caused by Puccinia hordei) and stripe/yellow rust ( caused by P. striformis fsp. hordei and P. striformis fsp. tritici) are the major problem for barley cultivation in Nepal. Durable resistant variety of the barley is highly important for this country. Barley rust resistance is controlled by many major genes and quantitative trait loci (QTLs) and pyramiding these genes into varieties is the most important barley breeding strategies in Nepal. Molecular marker assisted breeding (MAB) is the only option for this. Marker assisted screening is the primary stage to initiate the MAB. One hundred and nine Nepalese barley accessions were screened using six and eleven SSR markers linked to leaf rust and stripe rust resistance genes respectively. Bonus and Local Jau was used as the resistant and susceptible check respectively. Leaf rust resistance gene Rphl, Rph2, Rph3, Rph7, QBLR-P and QTL on 5HS was detected on Nepalese barley accessions using respective SSR markers. Similarly, stripe rust resistance genes QTL on lH, QTL5 on lH, QTL on 4H, QTL on SH, QTL on 6H, QTL on 7H, YrpstYl and Rpsx were detected. Eight Nepalese barley accessions showed presence of three and more leaf rust resistant genes and twenty-five Nepalese barley accessions have three and more stripe rust resistance genes. Poor relationship between rust resistance gene and field disease may be due to the less relationship between the pathogen type on field and rust resistance genes detected using SSR markers on Nepalese barley germplasm.
Link for e-copy: http://elibrary.narc.gov.np/?r=1491 E-copies
http://nkcs.org.np/narc/dl/?r=1491URL Screening Nepalese rice germplasm for blast resistance characters using molecular markers. / Madan Raj Bhatta
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Title : Screening Nepalese rice germplasm for blast resistance characters using molecular markers. Material Type: printed text Authors: Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Niroula, Raj.K, Author ; Sah, Bindeshwar P., Author Publisher: Lalitpur : Nepal Agriculture Research Council (NARC) Publication Date: 2012 Pagination: 11-17 p. Languages : English (eng) Keywords: 'Magnaporthe' 'resistant' 'susceptible' 'check' 'gene' Abstract: Blast (caused by Magnaporthe oryzae) is the major yield limiting biotic stress for rice farming in Nepal that is prevalent all over the country. Resistant variety for one location becomes susceptible to another location which shows the need of resistant gene pyramiding for yield stability. Identifying blast resistant genes in Nepalese rice germplasm and its use for varietal development is very important. Ninety two Nepalese rice accessions were screened using 12 SSR markers for presence of different blast resistant genes. IR-64 and Sabitri were used as resistant check while Masuli and Jumli Marshi were used as susceptible check. Blast resistant genes Pi-54, Pi-y2(t), Pi-d(t) 1, Pi-z, Pi-a, Pi-k, Pi-yl (t) and Pi-44 were detected on seven, seven, nine, 11, 20 and 28 rice accessions respectively. Eighteen rice accessions showed presence Pi-b and Pi-g(t), 22 rice accessions showed presence of Pi-29 and Pi-11; and two rice accessions showed presence of Pi-ta and Pi20(t). Nepalese rice gene pool doesn't contain resistant gene Pi-d(t)2 and it needs to incorporate from exotic sources. Therefore, many Nepalese rice landraces can be used on marker assisted gene pyramiding program for development of durable blast resistance varieties.
Link for e-copy: http://elibrary.narc.gov.np/?r=1484 Screening Nepalese rice germplasm for blast resistance characters using molecular markers. [printed text] / Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Niroula, Raj.K, Author ; Sah, Bindeshwar P., Author . - Lalitpur : Nepal Agriculture Research Council (NARC), 2012 . - 11-17 p.
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Languages : English (eng)
Keywords: 'Magnaporthe' 'resistant' 'susceptible' 'check' 'gene' Abstract: Blast (caused by Magnaporthe oryzae) is the major yield limiting biotic stress for rice farming in Nepal that is prevalent all over the country. Resistant variety for one location becomes susceptible to another location which shows the need of resistant gene pyramiding for yield stability. Identifying blast resistant genes in Nepalese rice germplasm and its use for varietal development is very important. Ninety two Nepalese rice accessions were screened using 12 SSR markers for presence of different blast resistant genes. IR-64 and Sabitri were used as resistant check while Masuli and Jumli Marshi were used as susceptible check. Blast resistant genes Pi-54, Pi-y2(t), Pi-d(t) 1, Pi-z, Pi-a, Pi-k, Pi-yl (t) and Pi-44 were detected on seven, seven, nine, 11, 20 and 28 rice accessions respectively. Eighteen rice accessions showed presence Pi-b and Pi-g(t), 22 rice accessions showed presence of Pi-29 and Pi-11; and two rice accessions showed presence of Pi-ta and Pi20(t). Nepalese rice gene pool doesn't contain resistant gene Pi-d(t)2 and it needs to incorporate from exotic sources. Therefore, many Nepalese rice landraces can be used on marker assisted gene pyramiding program for development of durable blast resistance varieties.
Link for e-copy: http://elibrary.narc.gov.np/?r=1484 E-copies
http://nkcs.org.np/narc/dl/?r=1484URL
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Title : Variation on rust resistance characteristics on Nepalese barley germplasm. Material Type: printed text Authors: Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Khatiwada, Shambhu P., Author Publisher: Lalitpur : Nepal Agriculture Research Council (NARC) Publication Date: 2012 Pagination: 31-34 p. Languages : English (eng) Keywords: 'Puccinia', 'resistant', 'susceptible', 'rust', 'gene' Abstract: Barley is the major crop for the people living in the high hills and mountainous region of the Nepal. Rust is the major production threat for barley cultivation. However, a lot of variation can be observed on Nepalese barley accessions with respect to rust resistance characteristics. Two hundred and forty one barley accessions were screened for leaf rust ( caused by Puccinia hordei) and stripe rust ( caused by P. striformis f.sp. hordei) resistance characteristics on heading stage at Khumaltar, Lalitpur, Nepal during normal barley growing season 2011. Bonus (origin Sweden) and Local Jau (Nepalese landrace) were used as resistant and susceptible check respectively. Seventeen barley accessions showed leaf rust susceptibility but resistant with stripe rust. Thirty barley accessions showed resistant for both leaf rust and strip rust. Lower frequency of the leaf rust infection may be due to prevalent resistance gene for leaf rust resistant characteristics in Nepalese barley.
Link for e-copy: http://elibrary.narc.gov.np/?r=1490 Variation on rust resistance characteristics on Nepalese barley germplasm. [printed text] / Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Khatiwada, Shambhu P., Author . - Lalitpur : Nepal Agriculture Research Council (NARC), 2012 . - 31-34 p.
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Languages : English (eng)
Keywords: 'Puccinia', 'resistant', 'susceptible', 'rust', 'gene' Abstract: Barley is the major crop for the people living in the high hills and mountainous region of the Nepal. Rust is the major production threat for barley cultivation. However, a lot of variation can be observed on Nepalese barley accessions with respect to rust resistance characteristics. Two hundred and forty one barley accessions were screened for leaf rust ( caused by Puccinia hordei) and stripe rust ( caused by P. striformis f.sp. hordei) resistance characteristics on heading stage at Khumaltar, Lalitpur, Nepal during normal barley growing season 2011. Bonus (origin Sweden) and Local Jau (Nepalese landrace) were used as resistant and susceptible check respectively. Seventeen barley accessions showed leaf rust susceptibility but resistant with stripe rust. Thirty barley accessions showed resistant for both leaf rust and strip rust. Lower frequency of the leaf rust infection may be due to prevalent resistance gene for leaf rust resistant characteristics in Nepalese barley.
Link for e-copy: http://elibrary.narc.gov.np/?r=1490 E-copies
http://nkcs.org.np/narc/dl/?r=1490URL