scholarly journals Choose the Right Citrus Rootstock

EDIS ◽  
2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
William S. Castle ◽  
Stephen Futch ◽  
Rhuanito Soranz Ferrarezi

After the arrival in 2005 of citrus greening disease or Huanglongbing in Florida, making a profitable rootstock decision became more complicated.  New rootstocks are being developed and released for commercialization at an accelerated pace.  Regardless of these changes, there remains a time-honored framework for selecting rootstocks. This publication provides guidance in 4 aspects of scion selection: site history, objectives, sources of information on rootstocks, and choosing a rootstock that matches site and grower objectives.https://edis.ifas.ufl.edu/hs178 This is a revision, original publication: Castle, William, and James Ferguson. 1. “Considerations for Choosing the Right Rootstocks”. EDIS 2003 (13). https://journals.flvc.org/edis/article/view/108974.

Author(s):  
Alireza Pourreza ◽  
Won Suk (Daniel) Lee ◽  
Eran Raveh ◽  
Youngki Hong ◽  
Hyuck-Joo Kim

2020 ◽  
Vol 92 (2) ◽  
pp. 333-343
Author(s):  
Xing-Hai Zhang ◽  
Nicholas Pizzo ◽  
Mohamed Abutineh ◽  
Xiao-Lu Jin ◽  
Sarah Naylon ◽  
...  

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
El-Desouky Ammar ◽  
Justin George ◽  
Kasie Sturgeon ◽  
Lukasz L. Stelinski ◽  
Robert G. Shatters

Abstract The Asian citrus psyllid (Diaphorina citri) transmits the bacterium ‘Candidatus Liberibacter asiaticus’ (CLas), which causes huanglongbing (citrus greening) disease, in a circulative-propagative manner. We compared CLas inoculation efficiency of D. citri nymphs and adults into healthy (uninfected) citron leaves when both vector stages were reared from eggs on infected plants. The proportion of CLas-positive leaves was 2.5% for nymphs and 36.3% for adults. CLas acquisition by early instar nymphs followed by dissections of adults and 4th instar nymphs revealed that CLas bacterium had moved into the head-thorax section (containing the salivary glands) in 26.7–30.0% of nymphs and 37–45% of adults. Mean Ct values in these sections were 31.6–32.9 and 26.8–27.0 for nymphs and adults, respectively. Therefore, CLas incidence and titer were higher in the head-thorax of adults than in nymphs. Our results suggest that following acquisition of CLas by early instar D. citri nymphs, emerging adults inoculate the bacteria into citrus more efficiently than nymphs because adults are afforded a longer latent period necessary for multiplication and/or translocation of CLas into the salivary glands of the vector. We propose that CLas uses D. citri nymphs mainly for pathogen acquisition and multiplication, and their adults mainly for pathogen inoculation and spread.


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