Research Article Agronomic performance of plantain genotypes and genetic variability using Ward-MLM algorithm

Abstract

Plantains in Brazil are produced from the `Terra Maranhão', 'Terrinha' and 'D´Angola' cultivars, which are all susceptible to black Sigatoka, weevils and nematodes. Therefore, the development of resistant plantain cultivars with agronomic characteristics aligned with market demands is the most efficient way to overcome these barriers regarding fruit production. The objectives of this work were to evaluate plantain cultivars for agronomic and physicochemical characteristics, and to estimate their genetic variability using ISSR molecular markers. The experimental design used was randomized block with ten plantain genotypes distributed in five blocks with four plants per plot. Ten agronomic and five physicochemical characteristics were measured. The agronomic, physicochemical and molecular (ISSR) characteristics were analyzed together using the Ward-MLM algorithm. Based on the agronomic and physicochemical evaluations, the 'Red Yad', 'Curare Enano' and 'Chifre de Vaca' genotypes could potentially be recommended to farmers, especially due to their short height and higher bunch mass and number of hands. The analysis of the combined data using the Ward-MLM algorithm identified genetic variability that, although restricted, can be used for genetic improvement strategies. To the best of our knowledge this is the first work that validates new plantains under Brazilian conditions, increasing cultivar options for farmers.

Promising green banana and plantain genotypes for making flour

“…The study was conducted in the experimental field located in the municipality of Cruz das Almas, in the state of Bahia, Brazil (12º40'19"S, 39º06'22'W', at 220 m above sea level), between October 2013 and December 2015. The climate is classified as Aw to Am, tropical hot and humid, according to Köppen's classification, with an average annual temperature of 24.5°C, relative humidity of 80%, and rainfall of 1,250 mm (Gonçalves et al, 2018 The experiment was conducted in a completely randomized design with three experimental replicates, corresponding to the fruits of three different plants.…”

“…In Brazil, plantains, known as "banana-daterra", differ from dessert bananas due to their larger and starchier fruits that are generally palatable only after cooking (Daniells, 2003). Although plantains are important in the country, only three varieties are available to farmers: Terra Maranhão, Terrinha, and D'Angola (Gonçalves et al, 2018).…”

Effect of trans-zeatin riboside application on growth of banana (Musa AAA Simmonds) cv. Williams in the juvenile phase

“…The increase in pseudostem diameter could indicate a higher cellular activity, which implies increases in dry mass, higher demand for nutrients, and a higher meristematic activity (Sánchez and Mira, 2013). In Musa sp., a large pseudostem diameter correlates with a higher plant resistance to breakage by wind and reflects a plant's ability to sustain the bunch (Gonçalves et al, 2018), as well as correlates with a higher storage capacity in the pseudostem for water and carbohydrates (Sánchez and Mira, 2013;Shivashankar et al, 2016).…”

Crescimento E Produção Da Bananeira 'Farta Velhaco' Em Diferentes Espaçamentos, Em Mato Grosso

“…O número de pencas não mostrou resposta às densidades, obtendo, em média, sete pencas por cacho (Tabela 2), similar ao encontrado por Gonçalves et al, (2018). Apesar da não significância entre os tratamentos é importante observar que os valores encontrados nesse estudo são superiores aos encontrados por Cavalcante et al (2014), com valores médios variando entre 5,32 a 6,10 pencas quando cultivadas, respectivamente, nos espaçamentos de 3,00 m x 3,00m e de 4,00m x 2,00 m x 1,00 m. Gonçalves et al (2018) encontrou 7,32 penca por cacho para a cultivar tipo Velhaca, valor similar ao deste trabalho. A avaliação do número de pencas por cacho é importante para o produtor, uma vez que grande parte do mercado usa a penca como unidade comercial, além de promover um aumento no número de frutos e, conseqüentemente, uma elevação do peso do cacho.…”