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Topics - Ilya11

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1
Citrus General Discussion / A new publication on mandarin domestication
« on: August 11, 2018, 10:17:54 AM »
A very instructive article on the process of mandarin diversification and domestication has been published recently

Genome of Wild Mandarin and Domestication History of Mandarin

They found a center of radiance of Citrus reticulata in Nanling mountains in South China, sequenced the genome of two wild plants in Mangshan region and used this information and previously developed markers of pomelo, C.ichangensis and  citron to identify two groups of domesticated  mandarins North and South of Nanling ridge.



Domesticated mandarins show a dramatic decrease in fruit citric acid content, while their sugar levels are not different from wild plants.

Mangshan mandarin ( different from Citrus mangshanensis also growing in this region) has already 1.7% of its genome introgressed from Ichang papeda, but almost no influence from pomelo or citron, while domesticated mandarins have up to 10% percent of genes from pomelo.

Satsumas are very different from both groups of Chinese mandarins and have 27% of introgressed pomelo, more than clementines with 18% of pomelo genes.
 
Mediterranean mandarin belongs to the South group of Chinese mandarins, while Changsha and  Ponkan are North mandarins.

2
Cold Hardy Citrus / moving and blocking
« on: May 01, 2018, 10:33:55 AM »
Millet,
I do not understand why you are blocking some posts or moving them elsewhere?
What is an idea behind moving a report on this year hardy citrus survival to the main Tropical Fruit Form?

3
Citrus General Discussion / Pigmented Mexican limes
« on: September 16, 2017, 10:22:27 AM »
Anthocyanin containing  pigmented Mexican limes were produced in Florida by transgenic insertion of genes from red grape (Vitis):

 

 and Moro orange:



http://journal.ashspublications.org/content/141/1/54.abstract   

4
Cold Hardy Citrus / 17-11 pummelo x citrumelo hybride
« on: May 01, 2017, 04:12:07 AM »
Do we know what happened to this interesting hybrid?
I has not be able to find any further information on it.
In  leaf freeze resistance tests it was shown to have a similiar or even better hardiness than US119.

http://hortsci.ashspublications.org/content/33/4/744.full.pdf

5
Citrus General Discussion / What is it- greening?
« on: February 28, 2017, 08:43:10 AM »
I like  a lot grapefruits from USA, they are much tastier than those coming from Israel or Italy, but today have seen very strange  fruits with a lot of uneven green coloration. Is it possible, that they are affected by greening?


6
Cold Hardy Citrus / How hardy is nasnaran?
« on: January 05, 2015, 04:04:11 AM »
I am looking for information on the hardiness of Nasnaran (Citrus amblycarpa, Djerook Leemo).
It is coming from tropical Indonesia, but strangely is listed among cold hardy varieties.
I read on another forum that its 2 year old seedlings has not been damaged at all after -10C (14F). What could be the hardiness of mature trees?

Thank you in advance,

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