18 research outputs found
Influência da polinização com variedades de laranja-doce sobre o número de sementes de tangelo Nova Pollination influence of sweet orange varieties on 'Nova tangelo' seeds production
O objetivo deste trabalho foi estudar a influência da polinização sobre o número de sementes de tangelo Nova. O experimento foi conduzido no Pólo de Desenvolvimento Tecnológico dos Agronegócios do Sudoeste Paulista/DDD, em Capão Bonito (SP), na safra 2004-2005. Flores de plantas de tangelo Nova, com nove anos, foram tratadas durante o florescimento em 2004, como segue: 1. Polinização com laranja Valência; 2. Polinização com laranja Natal; 3. Polinização com laranja Pêra; 4. Isolamento de flores emasculadas; 5. Isolamento de flores completas, e 6. Testemunha (flor livre). Em maio de 2005, os frutos foram colhidos. Embora não tenha existido diferença estatística entre os resultados, em valores absolutos, a maior porcentagem de frutos colhidos foi observada no tratamento com laranja Pêra (42%). Nos tratamentos 4 e 5 não houve frutos colhidos, o que sugere que este tangelo não desenvolveu frutos partenocárpicos nas condições deste estudo. Nos tratamentos com polinização cruzada, observaram-se entre 20 e 23 sementes nos frutos, o que mostra a influência da polinização nas características dos frutos. Não se observaram diferenças significativas nas qualidades do fruto.<br>The objective of this work was to study the pollination influence on Nova tangelo seed production. The experiment was carried out in the Pólo de Desenvolvimento Tecnológico dos Agronegócios do Sudoeste Paulista/DDD, Capão Bonito, SP, Brazil, during 2004/2005 crop. Nine years old flowers of Nova tangelo plants were treated as follows: 1. Valencia sweet orange pollination; 2. Natal sweet orange pollination; 3. Pera sweet orange pollination; 4. emasculated flower isolation; 5. complete flower isolation and 6. Check (free flower). In May 2005, the fruits were harvested. The highest harvested fruits percentage was obtained in Pera sweet orange treatment (42%). No fruits were obtained in treatments 4 and 5, suggesting that this tangelo did not develop partenocarpic fruits in this study conditions. In cross-pollination treatments was observed between 20 and 23 seeds in the fruits, which shows an evident pollination influence on fruit characteristic. No significant differences were noticed in fruit quality
Beyond the New Indian History: Recent Trends in the Historiography on the Native Peoples of North America
Since its emergence over thirty years ago, the New Indian history has had a tremendous impact on studies of Native peoples in North America. Nonetheless, in crucial ways and for various reasons, scholarship on American Indians often remains isolated from larger currents of North American history. Just over the last decade, a handful of works have built on the foundations of the New Indian history and more consciously put American Indians into wide ranging conversations about North American culture and society. It is this current wave of scholarship that holds the most promise for moving the study of American Indians beyond the New Indian history and into an even more fruitful period where the connections between the experiences of American Indians and those of other North Americans draw increasing interest and examination