LIBRO-CONGRESO-CITRUS

S18
S18P28
Tree performance and fruit quality evaluation of ‘Shatangju’ mandarin grafted on four rootstocks
in South China
Liu X. 1 , Huang M. 1 , Li J. 2 , Chen J. 1 and He Y. 1
1 College of Horticulture, South China Agricultural University, China; and 2 Zhongkai University of Agriculture and Engineering, China.
willderliu@gmail.com
‘Shatangju’ (Citrus reticulata), a delicious fresh fruit variety of citrus, is native to South China. Its fruit is
orange red, thin skin and easy peeling, and now it’s one of the largest economic benefit fruits in South China.
But very few studies have been conducted on rootstocks for ‘Shatangju’ in China. So, a field experiment
with ‘Shatangju’ grafted onto 4 rootstocks was carried out in Guangdong Province, to compare rootstock
performance and to make its comprehensive evaluation by principal component analysis (PCA). The evaluated
rootstocks were: ‘Trifoliate’ orange (Poncirus trifoliata), ‘Canton’ lemon (Citrus limonia), ‘Red’ tangerine (C.
reticulata) and ‘Sour’ tangerine (C. reticulata). The trees, planted in 2002, were arranged in a randomized
block design, with five replicates and one plant per plot. After 2 successive years of evaluation, results showed
that trees grafted on ‘Trifoliate’ orange and ‘Canton’ lemon were dwarfing and the others were vigorous.
Fruits from ‘Canton’ lemon rootstock were largest and had lowest edible rate, while fruits on ‘Trifoliate’
orange were smallest but had the reddest color. The effects on fruit internal quality were irregular. The results
from PCA by SPSS showed that the score of ‘Canton’ lemon rootstock was highest in both years. PCA proved
to be a very effective procedure to obtain a synthetic judgment of rootstocks.
S18P29
Influence of different rootstock type on chlorophyll content and mineral elements concentration
in scion of ‘Kinnow’ mandarin
Hosseini Farahi M. 1 , Aboutalebi Jahromi A. 2 and Hasanzada H. 3
1 Young Researcherch Club, Yasouj Branch, Islamic Azad University, Yasouj, Iran; 2 Department of Horticulture Science, Jahrom Branch,
Islamic Azad University, Jahrom, Iran; and 3 M.Sc in Horticulture and Specialist of Minab Agricultural Research Station, Iran .
m.hosseini.farahi@gmail.com
The aim of this work was evaluated the effect of the 4 citrus rootstocks: sour orange (Citrus aurantium),
‘Bakraei’ (Citrus reticulata × C. aurantium), ‘Mexican’ lime (Citrus aurantifolia) and ‘Volkamer’ lemon (Citrus
volkameriana) on chlorophyll content and mineral elements (N, P, K, Ca, Mg, Na, Fe, Zn, Cu, Mn, Cl and B)
in scion’s leaf of ‘Kinnow’ mandarin (C. reticulata) grown in pot containing calcareous soil in greenhouse as
completely randomized design with 4 replications. Results showed that rootstocks had significant effects
on leaf chlorophyll content. The greatest chlorophyll content obtained on ‘Volkamer’ lemon rootstock. The
rootstock types had significant effect on leaf mineral concentrations except of Cl, P, Cu, Mn and Zn. Leaf N and
Mn concentration was lower than optimum range on all rootstocks, K on ‘Mexican’ lime rootstock and Ca on
all rootstocks except ‘Mexican’ lime. The scions on sour orange had the highest Cl. Na concentrations was the
highest on ‘Mexican’ lime rootstock.
S18P30
Preliminary studies on high density planting of some citrus cultivars to obtain a more rapid
recovery of investment capital
Bassal M.A.
Suez Canal University, Faculty of Agriculture, Horticulture Department, Egypt. magdy_bassal@yahoo.com
‘Clemenules’, ‘Hernandina’ and ‘Nova’ mandarins budded on sour orange rootstock were planted at two
planting spacing of 2x5 m and 5x5 m to obtain economic yields earlier in the lifespan of the orchard.
Annual fruit production plus cumulative and average yield per tree and per acre were estimated during five
production seasons, from 3rd to 7th years after planting (YAP). In addition, tree height, canopy diameter and
circumference, tree volume, and trunk girth were determined in the 6th and 7th YAP. Trees planted at 2x5 m
were significantly taller than those planted at 5x5 m, but the canopy volume of trees planted at 5x5 m was
338 - VALENCIA CONFERENCE CENTER, 18th-23rd NOVEMBER 2012