Morphophysiological Analysis of Passion Fruit Plants From Different Propagation Methods and Planting Spacing

Abstract

-The passion fruit (Passiflora cincinnata Mast.) is a perennial and drought resistant species that represents a new alternative crop for small farmers in rainfed conditions. This study aimed to evaluate the vegetative and physiological development of passion fruit plants derived from two propagation methods and grown at varied planting spacing. The experiment was conducted from January to June of 2012, in the Universidade Estadual do Sudoeste da Bahia (State University from Southwestern Bahia), in Brazil. It was carried out in a randomized block design under a 2 x 3 factorial scheme, which consisted of two propagation methods (cutting and seeds) and three planting spacing distances within a row (1.5; 3.0 and 4.0 m), however, at same distance between rows (3.0 m), with four replicates and four plants per plot. Cuttings and seeds were sampled from adult plants pre-selected in native areas from Vitória da Conquista -BA, Brazil. Growth (stem diameter and leaf area) and physiological parameters (leaf chlorophyll content, leaf water potential before dawn, relative water content and leaf gas exchange) were assessed on the 90 th , 120 th and 150 th day after transplanting of seedlings into the field (DAT). Based on our results, we concluded that despite plants propagated via cuttings showed most favorable water status, vegetative growth and photosynthetic capacity were lower whether compared to plants obtained from seeds.Keywords: Passiflora cincinnata Mast. Growth. Photosynthesis. Gas exchange. MORFOFISIOLOGIA DO MARACUJÁ-DO-MATO SOB DIFERENTES CONDIÇÕES DE PROPAGAÇÃO E ESPAÇAMENTOSRESUMO -O maracujá-do-mato (Passiflora cincinnata Mast.) é uma espécie perene, resistente à seca, podendo representar uma nova alternativa de cultivo para o pequeno agricultor em condições de sequeiro. O presente trabalho teve como objetivo avaliar o desenvolvimento vegetativo e fisiológico de plantas de maracujá -do-mato, sob diferentes condições de propagação e espaçamentos. O experimento foi conduzido no período de janeiro a junho de 2012, na Universidade Estadual do Sudoeste da Bahia, com o delineamento em blocos casualizados, em esquema fatorial 2 x 3, constituído por dois métodos de propagação e três espaçamentos de plantio na linha (3,0 x 1,5; 3,0 x 3,0 e 3,0x 4,0 m) permanecendo constantes as distâncias entre as linhas de plantio de 3,0 m, com quatro repetições e quatro plantas por parcela. As estacas e sementes foram coletadas de plantas adultas selecionadas em áreas nativas de Vitória da Conquista-BA. Foram realizadas avaliações de crescimento (diâmetro do caule e área foliar) e fisiológicas (teor de clorofila na folha, potencial hídrico foliar antemanhã, teor relativo de água e trocas gasosas foliares) aos 90, 120 e 150 dias após transplantio das mudas no campo (DAT). Nas condições em que o trabalho foi conduzido conclui-se que apesar da manutenção de status hídrico mais favorável das plantas propagadas via estaquia, o desenvolvimento vegetativo e a capacidade fotossintética são reduzidas quando comparadas aos de plantas ...

Postharvest quality and shelf life of Passiflora cincinnata BRS Sertão Forte fruits according to type of fertilization and storage

“…Ratio values were between 1.67 and 2.64, close to values obtained by Santos et al (2016) for fruits of the same species at different maturity stages, presenting Ratio values of 2.01 (almost ripe), 1.94 (ripe) and 2.11 (senescent). D 'Abadia et al (2020) obtained Ratio values between 2.2 and 2.7 for fruits of the parental population aged 60 days or more from anthesis.…”

“…In 2016, Embrapa launched the BRS Sertão Forte (BRS SF) (Embrapa 2020), a hybrid cultivar resulting from the crossing of two populations independently obtained, selected for fruit quality and yield (ARAÚJO et al, 2019). The cultivar met the wishes of small farmers for cultivation under rainfed conditions, considering the tolerance of the species to water stress (SANTOS et al, 2016). This cultivar was developed for semiarid and Cerrado conditions.…”

Effects of salinity on growth, physiological and anatomical traits of Passiflora species propagated from seeds and cuttings

“…Plant propagation through cutting has been successful in several commercial and wild passion fruit species (Passiflora spp.) with different purposes, such as forming uniform orchards, mitigating pathogen symptoms in the short term (Lima et al 2019), promoting crop precocity (Junqueira et al 2006;Santos et al 2016) and fixing through cloning of progenies (from different plants) traits of interest for genetic improvement (e.g., greater fruit and juice yields, more attractive ornamental features).…”

Salt stress on physiology, biometry and fruit quality of grafted Passiflora edulis

“…Yellow passion fruit is traditionally grown through seeds; however, in order to minimize phytosanitary problems caused by soil pathogens, many researchers have studied the grafting of commercial species using rootstocks of wild species resistant to soil pathogens, mainly of the genus Fusarium (SANTOS et al, 2016;SCHMILDT et al, 2018), P. edulis/P. gibertii (CAVICHIOLI et al, 2011); P. edulis / P. mucronate (ALEXANDRE et al, 2013); P. edulis/P.…”