Morphological Characterization and Phenological Modeling of <i>Jatropha platyphylla</i>(Euphorbiaceae) Muell. Arg. Genotypes  

作　　者：Edith Salazar-Villa Martha Lidia Gutiérrez-Pérez Federico Soto-Landeros Karla Marina Báez-Parra María de la Paz Sosa-Segura Miguel Angel Angulo-Escalante Edith Salazar-Villa;Martha Lidia Gutiérrez-Pérez;Federico Soto-Landeros;Karla Marina Báez-Parra;María de la Paz Sosa-Segura;Miguel Angel Angulo-Escalante(Centro de Investigación en Alimentación y Desarrollo AC, Culiacán, México;Facultad de Agronomía, Universidad Autónoma de Sinaloa, Culiacán, México;Instituto Tecnológico Superior de Guasave, Guasave, México;Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, México;Colegio de Bachilleres del Estado de Sinaloa, Culiacán, México)

机构地区：[1]Centro de Investigación en Alimentación y Desarrollo AC, Culiacán, México [2]Facultad de Agronomía, Universidad Autónoma de Sinaloa, Culiacán, México [3]Instituto Tecnológico Superior de Guasave, Guasave, México [4]Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, México [5]Colegio de Bachilleres del Estado de Sinaloa, Culiacán, México

出　　处：《American Journal of Plant Sciences》2022年第1期23-35,共13页美国植物学期刊（英文）

摘　　要：Morphological characterization and phenological modeling were carried out on genotypes of <i>Jatropha platyphylla</i> collected from the states of Sinaloa and Durango, Mexico. The morphological characterization evidenced the existence of monoecious plants, finding individuals with male and female flowers in the same inflorescence. Fruit with four seeds was also found. The phenological study was divided into two phases and calculated in thermal requirement (<span style="font-family:;" "="">°D): Vegetative [seedtime (0), germination (24), emergence (98), cotyledons (87), second (302) and fourth (524) true leaves, end of vegetative growth (302)] and reproductive [flowering (303), fructification (342), maturation (126), defoliation and senescence (450)]. The thermal constant (2558) was similar in all eight genotypes. The phenological stages and the accumulated degree days were adjusted with a third-degree polynomial (Stage = -0.0041<i>x</i>³ + 0.7446<i>x</i>² - 8.6808<i>x</i> + 6.2448) (R² = 0.99%) stage. The development of phenological models facilitates the prediction of the flowering date for the selection of varieties with high oil and protein content.</span>Morphological characterization and phenological modeling were carried out on genotypes of <i>Jatropha platyphylla</i> collected from the states of Sinaloa and Durango, Mexico. The morphological characterization evidenced the existence of monoecious plants, finding individuals with male and female flowers in the same inflorescence. Fruit with four seeds was also found. The phenological study was divided into two phases and calculated in thermal requirement (<span style="font-family:;" "="">°D): Vegetative [seedtime (0), germination (24), emergence (98), cotyledons (87), second (302) and fourth (524) true leaves, end of vegetative growth (302)] and reproductive [flowering (303), fructification (342), maturation (126), defoliation and senescence (450)]. The thermal constant (2558) was similar in all eight genotypes. The phenological stages and the accumulated degree days were adjusted with a third-degree polynomial (Stage = -0.0041<i>x</i>³ + 0.7446<i>x</i>² - 8.6808<i>x</i> + 6.2448) (R² = 0.99%) stage. The development of phenological models facilitates the prediction of the flowering date for the selection of varieties with high oil and protein content.</span>

关 键 词：DEGREE-DAYS MONOECIOUS Phenological Modeling Plant Breeding Varietal Selection 

分 类 号：O17[理学—数学]