Plant growth regulators and shade on emergence in macadamia nut tree

Renata Cristina Berchol Da Silva Garbelini,Antonio Renan Berchol Da Silva,Elizabeth Orika Ono,João Domingos Rodrigues,Elisangela Clarete Camili

doi:10.14393/bj-v32n5a2016-33076

Renata Cristina Berchol Da Silva Garbelini, Antonio Renan Berchol Da Silva + Show 3 more

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https://doi.org/10.14393/bj-v32n5a2016-33076

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Journal: Bioscience Journal	Publication Date: Jan 1, 2016
Citations: 2	License type: cc-by

Abstract

This study aimed to evaluate the effect of plant growth regulators and shading on seed germination of macadamia nut trees. The experiment was conducted in a seedling production nursery of the company “QueenNut Macadâmia” located in the “Palmeiras” Farm, Dois Corregos, Sao Paulo (SP) state, Brazil. The Treatments were T1: water (control) under a shading screen, T2: GA 4+7 + N-(phenylmethyl)-aminopurine (Promalin ® ) at 200 mL L -1 under a shading screen, T3: Promalin ® at 400 mL L -1 under a shading screen, T4: gibberellic acid (GA 3 ) + kinetin (Kt) + 3-indolebutyric acid (IBA) – Stimulate ® at 5 mL kg -1 seeds under a shading screen, T5: Stimulate ® at 10 mL kg -1 of seeds under a shading screen, and T6: water (control) under no shading screen. Seeds were soaked in the solutions or in water containing plant growth regulators for 24 hours. Then, they were dried and sown in sand. 450 seeds were used for each treatment. The evaluations began from seedling emergence by counting the total number of seedlings per treatment. A high average of macadamia nut tree seedling emergence was obtained in the treatments GA 4+7 + N-(phenylmethyl)-aminopurine (Promalin ® ) 400 mL L - 1 with Sombrite ® (75.7%), GA 4+7 + N-(phenylmethyl)-aminopurine (Promalin ® ) 200 mL L -1 (72.6%) Sombrite ® and water (control) without Sombrite ® (71.5%).

Highlights

The macadamia nut is native species fromAustralia
This study aimed to evaluate the effect of plant growth regulators and shading on seed germination of macadamia nut trees
The Treatments were T1: water under a shading screen, T2: GA4+7 + N-(phenylmethyl)-aminopurine (Promalin®) at 200 mL L-1 under a shading screen, T3: Promalin® at 400 mL L-1 under a shading screen, T4: gibberellic acid (GA3) + kinetin (Kt) + 3indolebutyric acid (IBA) – Stimulate® at 5 mL kg-1 seeds under a shading screen, T5: Stimulate® at 10 mL kg-1 of seeds under a shading screen, and T6: water under no shading screen

Summary

Introduction

The macadamia nut is native species fromAustralia. It belongs to the family Proteaceae.Among the ten species of the genus Macadamia, which produces edible nuts, the species with the highest quality is Macadamia integrifolia (BITTENCOURT, 1965).Macadamia was brought to Brazil in 1935 to the region of Limeira, São Paulo state, by Dierberger. The macadamia nut is native species from. Among the ten species of the genus Macadamia, which produces edible nuts, the species with the highest quality is Macadamia integrifolia (BITTENCOURT, 1965). Macadamia was brought to Brazil in 1935 to the region of Limeira, São Paulo state, by Dierberger. The production of seedlings for sale began (DIERBERGE; MARINO NETO, 1985). Due to a good adaptation and the production of commercially valuable nuts, macadamia has a great production potential to São Paulo and national agriculture (OJIMA, 1983)

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