The influence of planting density on the production of ‘Goldfinger’ (Musa spp., AAAB) in the subtropics

2008 ◽  
Vol 115 (3) ◽  
pp. 238-243 ◽  
Author(s):  
P.W. Langdon ◽  
A.W. Whiley ◽  
R.J. Mayer ◽  
K.G. Pegg ◽  
M.K. Smith
Keyword(s):  
2019 ◽  
Author(s):  
YJ Yoon ◽  
KJ Lee ◽  
JH Yi ◽  
YM Mo ◽  
GW Lee ◽  
...  
Keyword(s):  

2017 ◽  
pp. 44-54
Author(s):  
Zenaida Gonzaga ◽  
Warren Obeda ◽  
Ana Linda Gorme ◽  
Jessie Rom ◽  
Oscar Abrantes ◽  
...  

Okra or Lady’s finger, botanically known as Abelmoschus esculentus (L.) Moench, is a tropical and sub-tropical indigenous vegetable crop commonly grown for its fibrous, slimy, and nutritious fruits and consumed by all classes of population. It has also several medicinal and economic values. Despite its many uses and potential value, its importance is under estimated, under-utilized, and considered a minor crop and little attention was paid to its improvement. The study was conducted to evaluate the effects of different planting densities and mulching materials on the growth and yield of okra grown in slightly sloping area in the marginal uplands in Sta. Rita, Samar, Philippines. A split-plot experiment was set up with planting density as main plot and the different mulching materials as the sub-plot which were: unmulched or bare soil, rice straw, rice hull, hagonoy and plastic mulch. Planting density did not significantly affect the growth and yield of okra. Regardless ofthe mulching materials used, mulched plants were taller and yielded higher compared to unmulched plants. Moreover, the use of plastic mulch resulted to the highest total fruit yield. The results indicate the potential of mulching in increasing yield and thus profitability of okra production under marginal upland conditions.


2017 ◽  
Vol 23 (1) ◽  
Author(s):  
N.NANDHA KUMAR ◽  
K. SOURIANATHA SUNDARAM ◽  
D. SUDHAKAR ◽  
K.K. KUMAR

Excessive presence of polysaccharides, polyphenol and secondary metabolites in banana plant affects the quality of DNA and it leads to difficult in isolating good quality of DNA. An optimized modified CTAB protocol for the isolation of high quality and quantity of DNA obtained from banana leaf tissues has been developed. In this protocol a slight increased salt (NaCl) concentration (2.0M) was used in the extraction buffer. Polyvinylpyrrolidone (PVP) and Octanol were used for the removal of polyphenols and polymerase chain reaction (PCR) inhibitors. Proteins like various enzymes were degraded by Proteinase K and removed by centrifugation from plant extract during the isolation process resulting in pure genomic DNA, ready to use in downstream applications including PCR, quantitative polymerase chain reaction (qPCR), ligation, restriction and sequencing. This protocol yielded a high molecular weight DNA isolated from polyphenols rich leaves of Musa spp which was free from contamination and colour. The average yields of total DNA from leaf ranged from 917.4 to 1860.9 ng/ìL. This modified CTAB protocol reported here is less time consuming 4-5h, reproducible and can be used for a broad spectrum of plant species which have polyphenol and polysaccharide compounds.


2005 ◽  
Vol 53 (4) ◽  
pp. 405-415 ◽  
Author(s):  
P. Janaki ◽  
T. M. Thiyagarajan

Field experiments were conducted during 1998 and 1999 in June-September with rice variety ASD18 at the wetland farm, Tamil Nadu Agricultural University, Coimbatore, India to find out theeffect of N management approaches and planting densities on N accumulation by transplanted rice in a split plot design.The main plot consisted of three plant populations (33, 66 and 100 hills m-2) and the sub-plot treatments of five N management approaches. The results revealed thatthe average N uptake in roots and aboveground biomass progressively increased with growth stages. The mean root and aboveground biomass Nuptake were 26.1 to 130.6 and 6.4 to 17.8 kg ha-1, respectively. The N uptake of grain and straw was higher in theSesbania rostratagreen manuring + 150 kg N treatment, but it was not effective in increasing the grain yield. The mean total N uptake was found to be significantly lower at 33 hills m-2(76.9 kg ha-1) and increased with an increase in planting density (100.9 and 117.2 kg ha-1at 66 and 100 hills m-2density). N application had a significant influence on N uptake and the time course of N uptake in all the SPAD-guided N approaches. A significant regression coefficient was observed between the crop N uptake and grain yield. The relationship between cumulative N uptake at the flowering stage and the grain yield was quadratic at all three densities. The N uptake rate (µN) was maximum during the active tillering to panicle initiation period and declined sharply after that. In general, µNincreased with an increase in planting density and the increase was significant up to the panicle initiation to flowering period.thereafter, the N uptake rate was similar at densities of 66 and 100 hills m-2.


2006 ◽  
Vol 34 (1) ◽  
pp. 769-772 ◽  
Author(s):  
Jasenka Cosic ◽  
Karolina Vrandecic ◽  
Dario Novoselovic ◽  
Georg Drezner ◽  
Drazenka Jurkovic

2020 ◽  
Vol 3 (4) ◽  
pp. 02
Author(s):  
Andressa Gonçalves de Santana ◽  
Mateus Gonçalves Silva ◽  
Alexson Vieira Pordeus
Keyword(s):  

Os doces em pasta e cortes são bastante polpulares em diversas regiões do Brasil, contudo, de acordo com a resolução normativa  n° 9 de 1978, doce em pasta ou em massa é o produto resultante do processamento adequado das partes comestíveis desintregadas de vegetais com ou sem açucares, com ou sem adição de água, pectina, ajustador de pH e outros ingredientes e adtivos permitidos pela legislação de alimentos, até a consistência apropiada, sendo finalmente acondicionada de forma a assegurar sua perfeita conservação. A banana é uma fruta bem aceita pela população, entretanto, no Brasil ainda perde-se muito deste alimento após a sua colheita. Uma das formas de prevenir as perdas é utilizar a banana em doces e geléias, além de ser um alimento barato também é altamente nutritiva, representa fonte energética devido à presença de carboidratos além de ser fonte de vitaminas e minerais. O tamarindo é valorizada devido seus componentes nutricionais que contribuem para a saúde humana. O seu fruto apresenta significativo nível de vitaminas C, E e do complexo B, além de cálcio, ferro, fósforo, potássio, manganês e fibra dietética. Há também compostos orgânicos que o tornam um poderoso antioxidante e um agente anti-inflamatório. O estudo objetivou elaborar e avaliar as características físico-químicas do doce em massa enriquecido com tamarindo em diferentes concentrações. Os doces foram produzidos no setor de agroindústria do Instituto Federal da Paraíba, Unidade São Gonçalo - PB (IFPB), formulados em três concentrações: Doce de banana com 10% de tamarindo (DBT<sub>1</sub>), doce de banana com 20% (DBT<sub>2</sub>) e doce de banana com 30% (DBT<sub>3</sub>). Os produtos foram desenvolvidos a partir da seleção, classificação, lavagem e despolpamento dos frutos, as análises físico-químicas foram realizadas em triplicatas conforme metodologia do Instituto Adolfo Lutz no laboratório de análises de alimentos da Universidade Federal de Campina Grande, campus Pombal – PB, compreenderam os seguintes parâmetros:  pH, sólidos solúveis, acidez total, ácido ascórbico e açúcares redutores e não-redutores.<strong> </strong>Os resultados para o teor de sólidos solúveis variaram de 72,1°Brix para o doce com 10% de tamarindo a 62% (ºbrix) para o doce com 30 % de concentração de tamarindo, já o teor de vitamina C aumentou proporcionalmente em função das concentrações da polpa de tamarindo utilizada no processamento. Para açúcares redutores não houve diferença considerável entre as amostras analisadas. Os valores da acidez titulável, variaram de 0,07 (DBT<sub>1</sub>) a 0,19 (DBT<sub>3</sub>). Observa-se que à medida que aumenta a proporção de polpa de tamarindo a acidez também aumenta, o que já era esperado, pois a banana é um fruto de baixa acidez e o tamarindo de elevada acidez<strong>. </strong>Em açúcares totais pode-se observar uma maior variação, sendo de 6,64% (DBT<sub>3</sub>) à 14,43% (DBT<sub>1</sub>).<strong> </strong>As formulações do doce de banana enriquecido com tamarindo apresentam parâmetros físico-químicos que atendem a legislação, estando aptos a comercialização e consumo.


2018 ◽  
Vol 44 (10) ◽  
pp. 1560
Author(s):  
Xian-Qing HOU ◽  
You-Wen NIU ◽  
Wen-Li WU ◽  
Jin-Peng XU ◽  
Long SHI ◽  
...  

2013 ◽  
Vol 38 (7) ◽  
pp. 1286-1294 ◽  
Author(s):  
Zong-Xin LI ◽  
Yuan-Quan CHEN ◽  
Qing-Cheng WANG ◽  
Kai-Chang LIU ◽  
Wang-Sheng GAO ◽  
...  

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