LIBRO-CONGRESO-CITRUS

S17
S17P16
New tangors for Brazilian citriculture
Schinor E.H., Pacheco C.A., Bastianel M., Azevedo F.A., and Cristofani-Yaly M.
Centro APTA Citrus Sylvio Moreira/IAC, Brazil. evandro@centrodecitricultura.br
Obtaining of hybrids is an important strategy for the improvement of citrus. Since 1997, the Centro de
Citricultura Sylvio Moreira – Instituto Agronômico, has been conducting an extensive program of citrus
breeding via hybridization, to explore sources of disease resistance. Among the hybrids obtained from crosses
between ‘Murcot’t tangor (TM) and ‘Pera’ sweet orange (LP), two of them were visually selected as potential
cultivars. The aim of this study was to characterize horticulturally these materials. The plants of the hybrid
‘TMxLP 281’ are medium-sized, with high production. The fruits had early harvest season between April and
June, the fruits are flattened and they have intense orange color of the skin and pulp, with average weight of
145 g, 42.0% of juice content, º Brix of 12.4%, acidity of 1.02% and ratio of 12.1, indicating its potential for
fresh fruit market. The plants of the hybrid ‘TMxLP 16’ are high, with good production. The ‘TMxLP 16’ showed
fruit early ripening, with a harvest season between April and June, with fruits have a rounded shape, intense
orange color of the skin and pulp, with average weight of 202 g, 56.9% of juice yield, 12.9% ºBrix, acidity
1.06% and ratio of 12.2, with the potential for fresh market and juice industry. The analysis of acceptability
showed 67 and 71% of fruit approval and 96 and 98% of intent to purchase by the analysts, for hybrids ‘TMxLP
281’ and ‘TMxLP 16’, respectively. To the juice of the hybrid ‘TMxLP 16’ the acceptability and purchase intent
were 83 and 94%, respectively. Financial support: FAPESP, CNPq, INCT-Citrus.
S17P17
Three new easy peeler varieties bred by the Agricultural Research Council released world wise.
van Rensburg P.J. 1 , Sippel A.D. 2 , Combrink N.K. 2 , Maritz J.G.J. 2 , and Bijzet Z. 2
1 LGS Exports (Sa), Po Box 12484, Stellenbosch, 7613, South Africa; and 2 Agricultural Research Council – Institute for Tropical and
Subtropical Crops, Private Bag X11208, Nelspruit, 1200, South Africa (ARC/ ITSC), South Africa. pietvrensburg@worldonline.co.za
A brief description of the ‘ARCCIT1614’, ‘ARCCIT1519’ and ‘Sonet’, bred by researchers at the Institute for
Tropical and Subtropial Crops (ITSC) of the Agricultural Research Council (ARC), will be provided, as well
as performance data on these varieties. Both the ‘ARCCIT1614’ and ‘ARCCIT1519’ are ‘Ellendale’ x ‘Robin’
hybrids made by hand pollinations in 1982 by Dr H de Lange. Seeds were irradiated prior to planting (0.1 kgy
gama radiation) in an attempt to induce seedlessness. Both these varieties have high internal quality and are
high yielding mid season easy peeler varieties, maturing in June in South Africa. The ‘Sonet’ originated from
seed from an open pollinated ‘Miho Wase’ satsuma tree, growing adjacent to ‘Nova’, ‘Ellendale’ and ‘Novelty’
pollen sources. The seed was harvested in 1996 from the ‘Miho Wase’ satsuma fruit. The ‘Sonet’ is a high
yielding easy peeler variety, maturing at the end of March in South Africa. The IP management of these three
varieties has been licensed to LGS Exports (SA) of South Africa for the EU, USA, Morocco and most of South
America.
S17P18
A new potential elite citrus hybrid
Cheng C.F., Wei Z.X. 1 Hong L., Wu C.Q., and Qi J.R.
Chongqing Academy of Agricultural Sciences (CAAS), Fruit Research Institute, China. chengchf@hotmail.com
A new elite citrus type was generated which resulted from a hybrid progeny from crosses of ‘Licheng’ sweet
orange and ‘Chandler’ red pummelo in 2004. The hybrid seedling was grafted on a three year old satsuma
mandarin in the next year. In 2010, the grafted hybrid bloomed, and the tree had 49.5% flower branch with
leaves, 50.5% without leaves, meanwhile it showed well fruit set. The smooth fruit, whose fruit shape index
was 0.83, is aromatic, with a circular trace at the blossom end. The total soluble solid of the fruit was 14.0%,
which contained 9.95% of total sugar. The content of vitamin C in fruit reached 46.45 mg/100 ml, and the
total titrated acid was lower, only 0.79 g/100 mL, so TSS/TA ratio became higher and got to 17.6. Interestingly,
only 1.2 monoembryonic seeds were found per fruit. So, this is a promising new citrus hybrid type.
314 - VALENCIA CONFERENCE CENTER, 18th-23rd NOVEMBER 2012