MORPHOMETRIC INDICATORS IN NEW MEGATERMAL VARIETIES OF Cenchrus purpureus TOLERANT TO WATER STRESS
The objective of the present study was to characterize growth rates of new megatérmicas varieties of Cenchrus purpureus with tolerance to water stress in Valle del Cauto conditions. To this end, new varieties of C. purpureus were used (CT-601, CT-603, CT-605, CT-608, CT-609 and CT-115 as control), a...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Yucatán
2019-03-01
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| Series: | Tropical and Subtropical Agroecosystems |
| Subjects: | |
| Online Access: | https://www.revista.ccba.uady.mx/ojs/index.php/TSA/article/view/2784 |
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| author | Ramón Crucito Arias Perez Juan José Reyes Pérez Jorge Valentín Ray Ramírez Diocles Guillermo Benítez Jímenez Luis Guillermo Hernández Montiel José Leonardo Ledea Rodríguez |
| author_facet | Ramón Crucito Arias Perez Juan José Reyes Pérez Jorge Valentín Ray Ramírez Diocles Guillermo Benítez Jímenez Luis Guillermo Hernández Montiel José Leonardo Ledea Rodríguez |
| author_sort | Ramón Crucito Arias Perez |
| collection | DOAJ |
| description | The objective of the present study was to characterize growth rates of new megatérmicas varieties of Cenchrus purpureus with tolerance to water stress in Valle del Cauto conditions. To this end, new varieties of C. purpureus were used (CT-601, CT-603, CT-605, CT-608, CT-609 and CT-115 as control), at different regrowth ages (60, 90, 120 and 150 days), which were arranged in a random block design with factorial arrangement with four replicas. Within the low rainfall season, CT-601 stood out in the absolute growth rate (106.6 g day-1), but did not present significant differences (p≥0.05) with the rest of the varieties in this age group. . While the CT-115 variety presented the highest values for the relative growth rate at 60 days (114.4 g day-1), foliar area at the ages of 90 and 120 (285, 8 and 211.6 cm2, respectively ) and leaf area index (41.4) between 90 and 150 days the leaf area at 120 days of age (48.5 cm2 days-1) (p≤0.001). For the rainy season only TCA was affected by the interaction variety and age, and was represented by CT-608 at 60 days (p≤0.01) with 347.7 g day-1 of dry matter accumulation. It is concluded that the low rainfall regime, characteristic of Valle del Cauto, conditioned the morphological response in a marked way when combined the use of the new varieties in different ages of regrowth, while, in the rains, only the absolute growth rate is affected by this effect. |
| first_indexed | 2024-12-19T00:26:54Z |
| format | Article |
| id | doaj.art-52f675aa79e9483892b2f04c4622d407 |
| institution | Directory Open Access Journal |
| issn | 1870-0462 |
| language | English |
| last_indexed | 2024-12-19T00:26:54Z |
| publishDate | 2019-03-01 |
| publisher | Universidad Autónoma de Yucatán |
| record_format | Article |
| series | Tropical and Subtropical Agroecosystems |
| spelling | doaj.art-52f675aa79e9483892b2f04c4622d4072022-12-21T20:45:13ZengUniversidad Autónoma de YucatánTropical and Subtropical Agroecosystems1870-04622019-03-01221869MORPHOMETRIC INDICATORS IN NEW MEGATERMAL VARIETIES OF Cenchrus purpureus TOLERANT TO WATER STRESSRamón Crucito Arias Perez0Juan José Reyes Pérez1Jorge Valentín Ray Ramírez2Diocles Guillermo Benítez Jímenez3Luis Guillermo Hernández Montiel4José Leonardo Ledea Rodríguez5Instituto de Investigaciones Agropecuarias "Jorge Dimitrov"Universidad Técnica de Cotopaxi. Extensión La Maná. Av. Los Almendros y Pujilí, Edificio Universitario, La Maná, Ecuador. Universidad Técnica Estatal de Quevedo. Av. Walter Andrade. Km 1 ½ vía a Santo Domingo. Quevedo, Los Ríos, Ecuador.Instituto de Investigaciones Agropecuarias "Jorge Dimitrov"Instituto de Investigaciones Agropecuarias "Jorge Dimitrov"Centro de Investigaciones Biológicas del Noroeste (CIBNOR)Instituto de Investigaciones Agropecuarias "Jorge Dimitrov"The objective of the present study was to characterize growth rates of new megatérmicas varieties of Cenchrus purpureus with tolerance to water stress in Valle del Cauto conditions. To this end, new varieties of C. purpureus were used (CT-601, CT-603, CT-605, CT-608, CT-609 and CT-115 as control), at different regrowth ages (60, 90, 120 and 150 days), which were arranged in a random block design with factorial arrangement with four replicas. Within the low rainfall season, CT-601 stood out in the absolute growth rate (106.6 g day-1), but did not present significant differences (p≥0.05) with the rest of the varieties in this age group. . While the CT-115 variety presented the highest values for the relative growth rate at 60 days (114.4 g day-1), foliar area at the ages of 90 and 120 (285, 8 and 211.6 cm2, respectively ) and leaf area index (41.4) between 90 and 150 days the leaf area at 120 days of age (48.5 cm2 days-1) (p≤0.001). For the rainy season only TCA was affected by the interaction variety and age, and was represented by CT-608 at 60 days (p≤0.01) with 347.7 g day-1 of dry matter accumulation. It is concluded that the low rainfall regime, characteristic of Valle del Cauto, conditioned the morphological response in a marked way when combined the use of the new varieties in different ages of regrowth, while, in the rains, only the absolute growth rate is affected by this effect.https://www.revista.ccba.uady.mx/ojs/index.php/TSA/article/view/2784pennisetum purpureumecosistemas adversostolerancia a la sequía |
| spellingShingle | Ramón Crucito Arias Perez Juan José Reyes Pérez Jorge Valentín Ray Ramírez Diocles Guillermo Benítez Jímenez Luis Guillermo Hernández Montiel José Leonardo Ledea Rodríguez MORPHOMETRIC INDICATORS IN NEW MEGATERMAL VARIETIES OF Cenchrus purpureus TOLERANT TO WATER STRESS Tropical and Subtropical Agroecosystems pennisetum purpureum ecosistemas adversos tolerancia a la sequía |
| title | MORPHOMETRIC INDICATORS IN NEW MEGATERMAL VARIETIES OF Cenchrus purpureus TOLERANT TO WATER STRESS |
| title_full | MORPHOMETRIC INDICATORS IN NEW MEGATERMAL VARIETIES OF Cenchrus purpureus TOLERANT TO WATER STRESS |
| title_fullStr | MORPHOMETRIC INDICATORS IN NEW MEGATERMAL VARIETIES OF Cenchrus purpureus TOLERANT TO WATER STRESS |
| title_full_unstemmed | MORPHOMETRIC INDICATORS IN NEW MEGATERMAL VARIETIES OF Cenchrus purpureus TOLERANT TO WATER STRESS |
| title_short | MORPHOMETRIC INDICATORS IN NEW MEGATERMAL VARIETIES OF Cenchrus purpureus TOLERANT TO WATER STRESS |
| title_sort | morphometric indicators in new megatermal varieties of cenchrus purpureus tolerant to water stress |
| topic | pennisetum purpureum ecosistemas adversos tolerancia a la sequía |
| url | https://www.revista.ccba.uady.mx/ojs/index.php/TSA/article/view/2784 |
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