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  • 1
    Online Resource
    Online Resource
    Pyramiding Submergence Tolerance and Three Bacterial Blight Resistance Genes in Popular Rice Variety Hasanta through Marker-Assisted Backcross Breeding
    MDPI AG ; 2022
    In:  Agriculture Vol. 12, No. 11 ( 2022-10-31), p. 1815-
    Details
    In: Agriculture, MDPI AG, Vol. 12, No. 11 ( 2022-10-31), p. 1815-
    Abstract: Flash flooding (FF) along with bacterial blight (BB) outbreak are very destructive for rice production in the rainfed shallow-lowland (RSL) ecosystem. The presence of dynamic Xoo races with varying levels of genetic diversity and virulence renders their management extremely challenging under RSL. In this context, the marker-assisted improvement of plant resistance/tolerance has been proven as one of the most promising strategies towards the development of sustainable cultivars. The present study demonstrates the marker-assisted introgression of the submergence tolerant (Sub1) and three bacterial blight resistant genes (Xa21 + xa13 + xa5) into the genetic background of Hasanta, a long duration popular rice variety in the eastern coastal region of India. The rice genotypes, Swarna Sub1 (carrying Sub1) and IRBB66 (carrying Xa21 + xa13 + Xa7 + xa5 + Xa4) had maximum genetic similarity (0.84 and 0.73, respectively) with Hasanta; recurrent parent (RP) was used as donor. The forward analysis of target genes in F1s, IC1F1s and backcross (BC) generations was performed by linked/genic markers (Sub1bc2; pTA248, xa13prom and RM122), whereas background recovery of RP in each BC and segregating generations was performed utilizing 108 hypervariable SSR markers. Intervened speed breeding (SB) strategy and intensive phenotyping could lead the development of near isogenic lines (NILs) as to the RP in all basic traits. The performance of the near isogenic lines (NILs, BC2F3 and BC2F4), HS 232-411-391-756-37, HS 232-411-391-809-8, HS 232-411-391-756-18, HS 110-224-197-10-36, HS 232-411-391-809-81, HS 110-224-197-10-41 and HS 232-411-391-809-63 establishes the utility of marker-assisted backcross-breeding (MAB) and SB in accelerated trait introgression. The introgressed lines carrying Sub1 + Xa21 + xa13 + xa5 showed 76% to 91% survival under 14 days of submergence and durable BB resistance (percent disease index-PDI of 2.68 ± 0.26 to 6.22 ± 1.08 and lesion length, LL of 1.29 ± 0.12 to 4.2 ± 0.64 cm). Physiological analysis revealed that improved NILs, carrying Sub1 gene conquered adaptive physiological modulations, had reduced the consumption of soluble sugar and the degradation of total chlorophyll contents (TCC), and an enhanced level of Alcohol Dehydrogenase activity (ADH) and proline accumulation in all submergence regimes. The pyramided lines attained complete product profile of RP, that will contribute to sustainable rice production under RSL, particularly in the coastal region that has substantial acreage under the variety Hasanta.
    Type of Medium: Online Resource
    ISSN: 2077-0472
    URL: Article
    DOI: 10.3390/agriculture12111815
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2651678-0
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  • 2
    Online Resource
    Online Resource
    Marker-Assisted Improvement for Durable Bacterial Blight Resistance in Aromatic Rice Cultivar HUR 917 Popular in Eastern Parts of India
    MDPI AG ; 2023
    In:  Plants Vol. 12, No. 6 ( 2023-03-18), p. 1363-
    Details
    In: Plants, MDPI AG, Vol. 12, No. 6 ( 2023-03-18), p. 1363-
    Abstract: Bacterial blight (BB) is a devastating disease of rice in the tropics of Indian sub-continent, where the presence of Xoo races with varying levels of genetic diversity and virulence renders disease management extremely challenging. In this context, marker-assisted improvement of plant resistance has been proven as one of the most promising approaches for the development of sustainable rice cultivars. The present study demonstrates the marker-assisted introgression of the three BB resistant genes (Xa21 + xa13 + xa5) into the background of HUR 917, a popular aromatic short grain (ASG) rice cultivar in India. The performance of the resulting improved products (near isogenic lines (NILs), HR 23-5-37-83-5, HR 23-5-37-121-10, HR 23-5-37-121-14, HR 23-65-6-191-13, HR 23-65-6-237-2, HR 23-65-6-258-10 and HR 23-65-6-258-21) establishes the utility of marker-assisted selection (MAS) approach for accelerated trait introgression in rice. The MAS-bred lines carrying three introgressed genes showed broad spectrum BB resistance (lesion length, LL of 1.06 ± 1.35 cm to 4.61 ± 0.87 cm). Besides, these improved lines showed the complete product profile of recurrent parent HUR 917 along with the enhanced level of durable BB resistance. The improved introgression lines with durable BB resistance would contribute to sustainable rice production in India, particularly in the Indo-Gangetic plane that has substantial acreage under HUR 917.
    Type of Medium: Online Resource
    ISSN: 2223-7747
    URL: Article
    DOI: 10.3390/plants12061363
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2704341-1
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  • 3
    Online Resource
    Online Resource
    Genetic analysis for bacterial blight resistance in indica rice (Oryza sativa L.) cultivars
    Association of Rice Research Workers ; 2019
    In:  Oryza-An International Journal on Rice Vol. 56, No. 3 ( 2019-9-30), p. 247-255
    Details
    In: Oryza-An International Journal on Rice, Association of Rice Research Workers, Vol. 56, No. 3 ( 2019-9-30), p. 247-255
    Abstract: Prior information on genetics of bacterial blight (BB) resistance (R) genes is imperative for its successful utilization in trait development and breeding for new resistant varietiesin rice. This experiment was aimed to assess the genetics of BB resistance in susceptible but popular rice variety HUR-917 and IRBB 66 (isogenic lines of IR 24) which harbors five R genes. Bioassay results in the parental lines and crosses were revealed resistance and susceptible disease response in R gene(s) positive and negative lines, respectively with varying range of Xoo (Xanthomonas oryzae pv oryzae) pathotype specificity. Phenomics of F2 and Back Cross (BC) generations showed existence of non-allelic interaction (13:3) between R genes with substantial variability in disease severity. The plants carrying mono hetero-allelic R gene has exsertedModerately susceptible (MS) disease reaction with 6.42 to 8.86 disease severities, however, lines carrying 2 R gene(s) could be able to disease severity Moderate susceptible MS to Moderate Resistant MR against all pathotypes existing in the region make it valid that the doses complementarity and presence of interaction in R genes are major determinant in R expression. It was recorded that presence of two or more R genes (Xa21+xa13; Xa21+ xa13+xa5) exerted broad spectrum BB resistance, hence found more suitable to combat this disease in HUR-917.
    Type of Medium: Online Resource
    ISSN: 2249-5266 , 0474-7615
    URL: Issue
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.35709/ory.2019.56
    DOI: 10.35709/ory.2019.56.3
    DOI: 10.35709/ory.2019.56.2
    DOI: 10.35709/ory.2019.56.3.1
    Language: English
    Publisher: Association of Rice Research Workers
    Publication Date: 2019
    detail.hit.zdb_id: 742872-8
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  • 4
    Online Resource
    Online Resource
    Combining ability analysis for yield and contributing traits in short duration rice (Oryza sativa L.)
    Association of Rice Research Workers ; 2020
    In:  Oryza-An International Journal on Rice Vol. 57, No. 4 ( 2020-12-30), p. 271-276
    Details
    In: Oryza-An International Journal on Rice, Association of Rice Research Workers, Vol. 57, No. 4 ( 2020-12-30), p. 271-276
    Abstract: The breeding value is an important genetic parameter determines utility of lines/genotypes to be used as parent in breeding program. This study was aimed at dissecting the breeding values (combining abilities) in 8 short duration rice lines for yield and 15 attributing traits. Altogether, 28 F1s developed under half-diallel fashion along with eight parents were evaluated. The study revealed importance of both additive and non-additive gene effects in governing yield and yield components with preponderance of non-additive gene action for most of the yield components. Additive gene action was found important for 1000-grain weight. The parental genotype (NUD3) and (NDR 359) were found to be good general combiners. The hybrids namely NDR359/Sarjoo-52, NDR359/NUD2, NDR359/NDRK5088, NDR359/NDR1, NDR359/Nagina22, NDR359/NUD3, NDR359/CSR10, Sarjoo52/NDRK5088, Sarjoo52 X NDR 1, NUD 2/NDR1, NUD 2/NUD3, NDRK5088/Nagina22, NDRK5088/NUD3, NDRK5088/CSR10, NUD 3/Nagina 22, Nagina 22/NUD3, NUD3/CSR 10 have shown significant favourable sca effect for yield and different yield components.
    Type of Medium: Online Resource
    ISSN: 2249-5266 , 0474-7615
    URL: Issue
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.35709/ory.2020.57
    DOI: 10.35709/ory.2020.57.4
    DOI: 10.35709/ory.2019.56.2
    DOI: 10.35709/ory.2020.57.4.2
    Language: English
    Publisher: Association of Rice Research Workers
    Publication Date: 2020
    detail.hit.zdb_id: 742872-8
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  • 5
    Online Resource
    Online Resource
    Genetics of grain yield and its component traits in drought tolerance rice
    Association of Rice Research Workers ; 2022
    In:  Oryza-An International Journal on Rice Vol. 59, No. 2 ( 2022-6-29), p. 150-156
    Details
    In: Oryza-An International Journal on Rice, Association of Rice Research Workers, Vol. 59, No. 2 ( 2022-6-29), p. 150-156
    Abstract: The facts pertaining to the inheritance of basic and value addition traits are prerequisite in designing much suited breeding strategies to harness substantial genetic gain in crop plants. The present study was aimed at comprehensive scrutiny of the quantitative traits, responding drought tolerance in rice through generation mean analysis (GMA). We have evaluated six generations ( P1, P2, F1, F2, B1 and B2) of cross, HUR-917 × DRR Dhan-42. The results revealed that all scales, A, B, C and D were significant for yield and attributing traits under irrigated and drought conditions, reflecting the presence of epistasis. Major yield contributing traits like days to 50% flowering (DFF), days to maturity (DM), plant height (PH), panicle length (PL), flag leaf length (FLL), number of grains per panicle (NGPP) and test weight (TW) showed the presence of duplicate epistasis under both conditions. Whereas, traits like the number of earbearing tillers (NEBT) and grain yield per plant (GYPP) shown duplicate epistasis under drought. The results suggest the prevalence of additive gene effect and non-allelic interactions/epistasis effect on the genetic control of majority of the yield traits. Additive (d) effect and dominant × dominant (l) gene interaction was the only significant portion of gene controlling grain yield per plant in the rice. The positive additive gene effect indicates that HUR-917 contributes more to the trait than DRR Dhan-42 and vice versa.
    Type of Medium: Online Resource
    ISSN: 2249-5266 , 0474-7615
    URL: Issue
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.35709/ory.2022.59
    DOI: 10.35709/ory.2022.59.2
    DOI: 10.35709/ory.2019.56.2
    DOI: 10.35709/ory.2022.59.2.2
    Language: English
    Publisher: Association of Rice Research Workers
    Publication Date: 2022
    detail.hit.zdb_id: 742872-8
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