'Roxas purple,' a new NSIC-registered variety of mangosteen (Garcinia Mangostana L.)

Leon O. Namuco

Issue Date

4-2008

Abstract

'Roxas Purple' is a seedling selection of mangosteen. It is the second variety of mangosteen registered (NSIC 2006 Mg 02; April 11, 2007) with the National Seed Industry Council of the Department of Agriculture. The tree of 'Roxas Purple' has a semi-spreading growth habit. In Calauan, Laguna, it flowers early and fruits ripen from July to August. Average yield recorded during the last 3 fruiting seasons was 850 fruits per tree. The oblong-shaped fruits are small with a average weight of 65 g. The apex of the fruit is somewhat pointed with a narrow stigmatic lobe. Each fruit has 1 or 2 flat and small (1.3 g) seeds. The peel is smooth, 6.4 mm thick and turns purple when fully ripe. The flesh, which constitutes about 27 per cent of the fruit weight, is snowy white, acid sweet, has mild aroma and with total soluble solids (TSS) of 21.4 degree Brix. Titratable acidity (TA) of the flesh is 14 me per 100 g sample. ' Roxas Purple' responds very well to cleft grafting with rootstocks 1 o 2 years old. The scions should be taken from the orthotropic (vertical) shoots that are at least 4 months old from flushing. Seed is also advisable since mangosteen is an obligate apomict; however, start of fruiting is expected to be delayed to be delayed by about 5 years compared to grafted to grafted plants.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463x

Volume

33

Issue

1

Page

103-106

Document Type

Article

Frequency

tri-quarterly

Physical Description

pictures, tables

Language

English

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