S1 AND S2 LINES ALTERNATE COMBINED SELECTION AND PURE LINE IN S0 SELFED PLANTS IN WHEAT
The S1 and S2 lines alternate combined selection (ACS) method starts with the evaluation of S1 families derived from S0 self-pollinated selected plants. Since self-pollination occurs as a natural process in autogamous species, it is posible the self-pollination and evaluation at the same time in a single-plant selection plot (SI), from which the selected plants integrate the S1 families of the ACS. In this study, the incorporation of the SI in the ACS was developed. The expected response with respect to grain yield was estimated, and the observed response recorded in a population of the first cycle in wheat (Triticum aestivum L.). The ACS significatively increased grain yield in 25.8 % per cycle and 5.9 % of this amount was atributated to the SI. Agreement between expected and observed selection response was 84.4 %. SI improved 27 % the total expected response of the ACS; however, the genetic and operative efficiency of SI in ACS depended on the amount of seed obtained from each pollination and on the availability of agricultural regions with two planting seasons per year.
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Colegio de Postgraduados
1996
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oai:ojs.pkp.sfu.ca:article14052020-05-14T05:45:07Z S1 AND S2 LINES ALTERNATE COMBINED SELECTION AND PURE LINE IN S0 SELFED PLANTS IN WHEAT SELECCION COMBINADA ALTERNANTE DE LINEAS S1 Y S2 E INDIVIDUAL EN PLANTAS S0 AUTOFECUNDADAS EN TRIGO Benítez-Riquelme, Ignacio Triticum aestivum L. recurrent selection S1 and S2 selfed lines selection response endogamy grain yield Triticum aestivum L. selección recurrente líneas autofecundadas respuesta a la selección endogamia rendimiento de grano The S1 and S2 lines alternate combined selection (ACS) method starts with the evaluation of S1 families derived from S0 self-pollinated selected plants. Since self-pollination occurs as a natural process in autogamous species, it is posible the self-pollination and evaluation at the same time in a single-plant selection plot (SI), from which the selected plants integrate the S1 families of the ACS. In this study, the incorporation of the SI in the ACS was developed. The expected response with respect to grain yield was estimated, and the observed response recorded in a population of the first cycle in wheat (Triticum aestivum L.). The ACS significatively increased grain yield in 25.8 % per cycle and 5.9 % of this amount was atributated to the SI. Agreement between expected and observed selection response was 84.4 %. SI improved 27 % the total expected response of the ACS; however, the genetic and operative efficiency of SI in ACS depended on the amount of seed obtained from each pollination and on the availability of agricultural regions with two planting seasons per year. En la selección combinada alternante de líneas S1 y S2 (SCA), el proceso se inicia con la evaluación de familias S1, las cuales se derivan de la autofecundación de plantas S0. Como la autofecundación en autógamas ocurre de manera natural, es posible durante esta fase evaluar plantas autofecundadas S0 en un lote de selección individual (SI), donde las seleccionadas serán las familias S1 de la SCA. En este estudio, se desarrolla la inclusión de la SI en la SCA, se analiza su respuesta esperada y los resultados obtenidos en la población resultante del primer ciclo de selección para rendimiento de grano en trigo (Triticum aestivum L.). La SCA incrementó significativamente el rendimiento de grano en 25.8 % por ciclo, del cual, sin ser significativo, 5.9 % fue aportado por la SI. Al comparar los resultados obtenidos con los esperados, la concordancia fue de 84.8 %. La SI mejoró 27 % la respuesta total esperada de la SCA; sin embargo, la eficiencia genética y operativa de la inclusión de la SI en la SCA, fue dependiente de la cantidad de semilla obtenida por polinización y de la disponibilidad de regiones agrícolas con dos estaciones de selección por año. Colegio de Postgraduados 1996-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1405 Agrociencia; Vol. 30 No. 4 (1996): 1996-oct-dic; 523-531 Agrociencia; Vol. 30 Núm. 4 (1996): 1996-oct-dic; 523-531 2521-9766 1405-3195 spa https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1405/1405 |
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| databasecode |
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| region |
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| libraryname |
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| language |
spa |
| format |
Digital |
| author |
Benítez-Riquelme, Ignacio |
| spellingShingle |
Benítez-Riquelme, Ignacio S1 AND S2 LINES ALTERNATE COMBINED SELECTION AND PURE LINE IN S0 SELFED PLANTS IN WHEAT |
| author_facet |
Benítez-Riquelme, Ignacio |
| author_sort |
Benítez-Riquelme, Ignacio |
| title |
S1 AND S2 LINES ALTERNATE COMBINED SELECTION AND PURE LINE IN S0 SELFED PLANTS IN WHEAT |
| title_short |
S1 AND S2 LINES ALTERNATE COMBINED SELECTION AND PURE LINE IN S0 SELFED PLANTS IN WHEAT |
| title_full |
S1 AND S2 LINES ALTERNATE COMBINED SELECTION AND PURE LINE IN S0 SELFED PLANTS IN WHEAT |
| title_fullStr |
S1 AND S2 LINES ALTERNATE COMBINED SELECTION AND PURE LINE IN S0 SELFED PLANTS IN WHEAT |
| title_full_unstemmed |
S1 AND S2 LINES ALTERNATE COMBINED SELECTION AND PURE LINE IN S0 SELFED PLANTS IN WHEAT |
| title_sort |
s1 and s2 lines alternate combined selection and pure line in s0 selfed plants in wheat |
| description |
The S1 and S2 lines alternate combined selection (ACS) method starts with the evaluation of S1 families derived from S0 self-pollinated selected plants. Since
self-pollination occurs as a natural process in autogamous species, it is posible the self-pollination and evaluation at the same time in a single-plant selection plot (SI), from which the
selected plants integrate the S1 families of the ACS. In this study, the incorporation of the SI in the ACS was developed. The expected response with respect to grain yield was estimated, and
the observed response recorded in a population of the first cycle in wheat (Triticum aestivum L.). The ACS significatively increased grain yield in 25.8 % per cycle and 5.9 % of this amount
was atributated to the SI. Agreement between expected and observed selection response was 84.4 %. SI improved 27 % the total expected response of the ACS; however, the genetic and operative
efficiency of SI in ACS depended on the amount of seed obtained from each pollination and on the availability of agricultural regions with two planting seasons per year. |
| publisher |
Colegio de Postgraduados |
| publishDate |
1996 |
| url |
https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1405 |
| work_keys_str_mv |
AT benitezriquelmeignacio s1ands2linesalternatecombinedselectionandpurelineins0selfedplantsinwheat AT benitezriquelmeignacio seleccioncombinadaalternantedelineass1ys2eindividualenplantass0autofecundadasentrigo |
| _version_ |
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