Introgresión de la resistencia al deterioro fisiológico poscosecha en yuca Introgression in cassava of the physiological postharvest deterioration resistance
Se evaluó una población de medios hermanos (B1PD280) proveniente del cruzamiento del parental resistente al deterioro fisiológico poscosecha (DFP) CW429-1 (Manihot esculenta x M. walkerae), y ocho genotipos élite utilizados como padres recurrentes susceptibles. Se evaluaron cinco raíces por genotipo...
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Universidad Nacional de Colombia
2010-04-01
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| Series: | Acta Agronómica |
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| author | Elvia Amparo Rosero Alpala Constantino Cuambe Chiedozie Egesi Teresa Sánchez Nelson Morante Hernán Ceballos Martín Fregene Juan Gonzalo Morales Osorio |
| author_facet | Elvia Amparo Rosero Alpala Constantino Cuambe Chiedozie Egesi Teresa Sánchez Nelson Morante Hernán Ceballos Martín Fregene Juan Gonzalo Morales Osorio |
| author_sort | Elvia Amparo Rosero Alpala |
| collection | DOAJ |
| description | Se evaluó una población de medios hermanos (B1PD280) proveniente del cruzamiento del parental resistente al deterioro fisiológico poscosecha (DFP) CW429-1 (Manihot esculenta x M. walkerae), y ocho genotipos élite utilizados como padres recurrentes susceptibles. Se evaluaron cinco raíces por genotipo, 7 y 14 días después de la cosecha (d.d.c.) mediante una escala (0 - 100%). Los resultados mostraron reducción significativa de DFP (entre 10% y 46% en relación con los parentales recurrentes). Cincuenta y un genotipos tuvieron alto y medio nivel de resistencia (0 - 35%), 22% y 20% de ellos correspondieron a individuos sin síntomas 7 o 14 d.d.c., respectivamente. Se estableció una posible correlación entre DFP (14 d.d.c.) y escopoletina (0.523, P < 0.001) y materia seca (0.288, P < 0.001).<br>The accelerated Physiological Postharvest Deterioration (PPD) process limits the potential of cassava crop, diminishing its palatability and commercial value within 24-72 hours after harvest. A source of genes for drastic delay of PPD was identified in an inter-specific hybrid (CW429-1) between Manihot esculenta (cultivated cassava) and Manihot walkerae. The aim in this study was to evaluate the introgression of the resistance to PPD from the donor parent CW429-1 in cassava. A half-sib (BIPD280) population from resistant parental CW429-1 and 8 elite CIAT genotypes, used as susceptible recurrent parents, was developed and evaluated. The method proposed by Wheatley et al. (1985), with some modifications was used to quantify PPD. Five roots per genotype were evaluated 7 and 14 days after harvest (DAH), following a scale (0 - 100%), other relevant traits were evaluated. Results showed significant reduction of PPD (between 10-46% of PPD in relation to the recurrent parents). About 51% of genotypes were found to have high to medium level of resistance (0-35% PPD) of which 22 and 20% genotypes correspond to individuals without PPD after 7 and 14 DAH, respectively. A positive correlation was found between PPD (14 DAH) and scopoletin (0.523, p<0.001), and with dry matter (0.288, p<0.001). These preliminary results indicated that the scheme for introgressing PPD resistance was successful, that confirm the potential of the wild cassava in the scheme of cassava breeding. |
| format | Article |
| id | doaj-art-9916ee65da9b4a07a19b62b151b33335 |
| institution | DOAJ |
| issn | 0120-2812 |
| language | English |
| publishDate | 2010-04-01 |
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| series | Acta Agronómica |
| spelling | doaj-art-9916ee65da9b4a07a19b62b151b333352025-08-20T03:19:49ZengUniversidad Nacional de ColombiaActa Agronómica0120-28122010-04-01592180187Introgresión de la resistencia al deterioro fisiológico poscosecha en yuca Introgression in cassava of the physiological postharvest deterioration resistanceElvia Amparo Rosero AlpalaConstantino CuambeChiedozie EgesiTeresa SánchezNelson MoranteHernán CeballosMartín FregeneJuan Gonzalo Morales OsorioSe evaluó una población de medios hermanos (B1PD280) proveniente del cruzamiento del parental resistente al deterioro fisiológico poscosecha (DFP) CW429-1 (Manihot esculenta x M. walkerae), y ocho genotipos élite utilizados como padres recurrentes susceptibles. Se evaluaron cinco raíces por genotipo, 7 y 14 días después de la cosecha (d.d.c.) mediante una escala (0 - 100%). Los resultados mostraron reducción significativa de DFP (entre 10% y 46% en relación con los parentales recurrentes). Cincuenta y un genotipos tuvieron alto y medio nivel de resistencia (0 - 35%), 22% y 20% de ellos correspondieron a individuos sin síntomas 7 o 14 d.d.c., respectivamente. Se estableció una posible correlación entre DFP (14 d.d.c.) y escopoletina (0.523, P < 0.001) y materia seca (0.288, P < 0.001).<br>The accelerated Physiological Postharvest Deterioration (PPD) process limits the potential of cassava crop, diminishing its palatability and commercial value within 24-72 hours after harvest. A source of genes for drastic delay of PPD was identified in an inter-specific hybrid (CW429-1) between Manihot esculenta (cultivated cassava) and Manihot walkerae. The aim in this study was to evaluate the introgression of the resistance to PPD from the donor parent CW429-1 in cassava. A half-sib (BIPD280) population from resistant parental CW429-1 and 8 elite CIAT genotypes, used as susceptible recurrent parents, was developed and evaluated. The method proposed by Wheatley et al. (1985), with some modifications was used to quantify PPD. Five roots per genotype were evaluated 7 and 14 days after harvest (DAH), following a scale (0 - 100%), other relevant traits were evaluated. Results showed significant reduction of PPD (between 10-46% of PPD in relation to the recurrent parents). About 51% of genotypes were found to have high to medium level of resistance (0-35% PPD) of which 22 and 20% genotypes correspond to individuals without PPD after 7 and 14 DAH, respectively. A positive correlation was found between PPD (14 DAH) and scopoletin (0.523, p<0.001), and with dry matter (0.288, p<0.001). These preliminary results indicated that the scheme for introgressing PPD resistance was successful, that confirm the potential of the wild cassava in the scheme of cassava breeding.http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122010000200007Manihot esculentadeteriorointrogresiónManihot walkeraedeterioro fisiológico poscosecha DFP.Manihot esculentadeteriorationintrogressionManihot walkeraephysiological postharvest deterioration PPD. |
| spellingShingle | Elvia Amparo Rosero Alpala Constantino Cuambe Chiedozie Egesi Teresa Sánchez Nelson Morante Hernán Ceballos Martín Fregene Juan Gonzalo Morales Osorio Introgresión de la resistencia al deterioro fisiológico poscosecha en yuca Introgression in cassava of the physiological postharvest deterioration resistance Acta Agronómica Manihot esculenta deterioro introgresión Manihot walkerae deterioro fisiológico poscosecha DFP. Manihot esculenta deterioration introgression Manihot walkerae physiological postharvest deterioration PPD. |
| title | Introgresión de la resistencia al deterioro fisiológico poscosecha en yuca Introgression in cassava of the physiological postharvest deterioration resistance |
| title_full | Introgresión de la resistencia al deterioro fisiológico poscosecha en yuca Introgression in cassava of the physiological postharvest deterioration resistance |
| title_fullStr | Introgresión de la resistencia al deterioro fisiológico poscosecha en yuca Introgression in cassava of the physiological postharvest deterioration resistance |
| title_full_unstemmed | Introgresión de la resistencia al deterioro fisiológico poscosecha en yuca Introgression in cassava of the physiological postharvest deterioration resistance |
| title_short | Introgresión de la resistencia al deterioro fisiológico poscosecha en yuca Introgression in cassava of the physiological postharvest deterioration resistance |
| title_sort | introgresion de la resistencia al deterioro fisiologico poscosecha en yuca introgression in cassava of the physiological postharvest deterioration resistance |
| topic | Manihot esculenta deterioro introgresión Manihot walkerae deterioro fisiológico poscosecha DFP. Manihot esculenta deterioration introgression Manihot walkerae physiological postharvest deterioration PPD. |
| url | http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122010000200007 |
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