A somatic hybrid plant obtained by protoplast fusion between navel orange (Citrus sinensis) and satsuma mandarin (C. unshiu)

1988 ◽  
Vol 14 (2) ◽  
pp. 63-69 ◽  
Author(s):  
S. Kobayashi ◽  
T. Ohgawara ◽  
E. Ohgawara ◽  
I. Oiyama ◽  
S. Ishii
Keyword(s):  
Protoplast Fusion ◽  
Somatic Hybrid ◽  
Citrus Sinensis ◽  
Hybrid Plant ◽  
Navel Orange ◽  
Satsuma Mandarin

Production of somatic hybrids between satsuma mandarin (Citrus unshiu) and navel orange (Citrus sinensis) by protoplast fusion

2008 ◽  
Vol 51 (3) ◽  
pp. 186-191 ◽  
Author(s):  
Hyun Joo An ◽  
Seong-Beom Jin ◽  
Byoung Cheorl Kang ◽  
Hyo Guen Park
Keyword(s):  
Protoplast Fusion ◽  
Citrus Sinensis ◽  
Somatic Hybrids ◽  
Citrus Unshiu ◽  
Navel Orange ◽  
Satsuma Mandarin

Somatic hybrid plants obtained by protoplast fusion between Citrus sinensis and Poncirus trifoliata

1985 ◽  
Vol 71 (1) ◽  
pp. 1-4 ◽  
Author(s):  
T. Ohgawara ◽  
S. Kobayashi ◽  
E. Ohgawara ◽  
H. Uchimiya ◽  
S. Ishii
Keyword(s):  
Protoplast Fusion ◽  
Somatic Hybrid ◽  
Citrus Sinensis ◽  
Poncirus Trifoliata ◽  
Hybrid Plants

scholarly journals Response of Cybrids and a Somatic Hybrid of Lemon to Phoma tracheiphila Infections

HortScience ◽  
2000 ◽  
Vol 35 (1) ◽  
pp. 125-127 ◽  
Author(s):  
Nicasio Tusa ◽  
Sergio Fatta Del Bosco ◽  
Franco Nigro ◽  
Antonio Ippolito
Keyword(s):  
Protoplast Fusion ◽  
Somatic Hybrid ◽  
Citrus Sinensis ◽  
Sweet Orange ◽  
Lower Mortality ◽  
Mechanisms Of Resistance ◽  
Disease Symptoms ◽  
Intermediate Degree ◽  
Phoma Tracheiphila ◽  
Mal Secco

The reaction of lemon hybrids obtained by symmetrical and asymmetrical protoplast fusion, toward “mal secco” infection caused by Phoma tracheiphila (Petri) Kanc. et Ghik. was examined. Resistance was tested in `Valencia' sweet orange [Citrus sinensis (L.) Osbeck] and `Femminello' lemon [C. limon (L.) Burm. f.] somatic hybrid and cybrids, by stem and leaf inoculation tests and by analysis of propagule number of P. tracheiphila in the xylem of stem-inoculated plants. In general, the somatic hybrid and the cybrids showed an intermediate degree of resistance, with slight differences in disease symptoms, in comparison with resistant `Monachello' lemon and susceptible `Femminello' lemon, used as controls. The lower mortality in the asymmetrical lemon cybrids suggests that specific mechanisms of resistance to the disease could be activated in these genotypes.

Effects of potassium on fruit soluble sugar and citrate accumulations in Cara Cara navel orange (Citrus sinensis L. Osbeck)

2021 ◽  
Vol 283 ◽  
pp. 110057
Author(s):  
Songwei Wu ◽  
Changming Zhang ◽  
Ming Li ◽  
Qiling Tan ◽  
Xuecheng Sun ◽  
...  
Keyword(s):  
Citrus Sinensis ◽  
Soluble Sugar ◽  
Navel Orange

Response of orchard 'Washington Navel' orange, Citrus sinensis (L.) Osbeck, to saline irrigation water. II. Flowering, fruit set and fruit growth

1989 ◽  
Vol 40 (2) ◽  
pp. 371 ◽  
Author(s):  
H Howie ◽  
J Lloyd
Keyword(s):  
Leaf Area ◽  
Citrus Sinensis ◽  
Fruit Set ◽  
High Salinity ◽  
Starch Content ◽  
Fruit Growth ◽  
Leaf Abscission ◽  
Navel Orange ◽  
Washington Navel ◽  
Floral Differentiation

Flowering, fruit set and fruit growth of 'Washington Navel' orange fruit was monitored on 24-year-old Citrus sinensis trees on Sweet orange rootstocks that had been irrigated with either 5 or 20 mol m-3 NaCl for 5 years preceding measurements.Trees irrigated with high salinity water had reduced flowering intensities and lower rates of fruit set. This resulted in final fruit numbers for trees irrigated with 20 mol m-3 being 38% those of trees irrigated with 5 mol m-3 NaCl. Final fruit numbers were quantitatively related to canopy leaf area for both salinity treatments.Despite little difference between trees in terms of leaf area/fruit number ratio, slower rates of fruit growth were initially observed on high salinity trees. This effect was not apparent during the latter stages of fruit development. Consequently, fruit on trees irrigated with 20 mol m-3 NaCl grew to the same size as fruit on trees irrigated with 5 mol m-3 NaCl, but achieved this size at a later date. Measurements of Brix/acid ratios showed that fruit on high salinity trees reached maturity standards 25 days after fruit on low salinity trees.Unimpaired growth of fruit on high salinity trees during summer and autumn occurred, despite appreciable leaf abscission, suggesting that reserve carbohydrate was utilized for growth during this period. Twigs on high salinity trees had much reduced starch content at the time of floral differentiation in winter. Twig starch content and extent of floral differentiation varied in a similar way when examined as a function of leaf abscission. This suggests that reduced flowering and fruit set in salinized citrus trees is due to low levels of reserve starch, most of which has been utilized to support fruit growth in the absence of carbohydrate production during summer and autumn.

scholarly journals Diversity Analysis of Endophytic Bacterial Community in Two Citrus Cultivars With Different Resistance to Citrus Canker

2021 ◽  
Author(s):  
Bing Liu ◽  
Jiahao Lai ◽  
Simeng Wu ◽  
Junxi Jiang ◽  
Weigang Kuang
Keyword(s):  
Bacterial Community ◽  
Endophytic Bacteria ◽  
Citrus Canker ◽  
Navel Orange ◽  
Xanthomonas Citri ◽  
Canker Disease ◽  
Satsuma Mandarin ◽  
Endophytic Bacterial Community ◽  
Dominant Bacteria ◽  
The Relationship

Abstract The selective infection of Xanthomonas citri pv. citri to citrus cultivars is universally known, but it is not clarified whether there is a relationship between endophytic bacteria and the resistance of host variety to canker disease. In order to explore the relationship, Satsuma mandarin and Newhall navel orange were collected respectively as samples of resistant or susceptible cultivars to citrus canker disease, and endophytic bacterial community of two citrus cultivars were analyzed by using a next-generation, Illumina-based sequencing approach. Simultaneously, the seasonal dynamics of endophytic bacterial community and dominant genera were analyzed. The results showed that there were four dominant groups including Proteobacteria, Firmicutes, Actinobacteria and Bacteroidetes in all samples at phylum level. Endophytic bacteria were the most abundant in spring samples, then in summer and autumn samples. There were some differences between endophytic bacterial community of resistant citrus and that of susceptible citrus to canker disease, and the endophytic bacteria of Satsuma mandarin are more abundant than that of Newhall navel orange. According to the analysis of dominant bacteria in two citrus cultivars, it was found that some endophytic bacteria with antagonistic characteristics existed universally in all samples, although the dominant bacteria in different seasonal sample were different. However, in Newhall navel orange of susceptible citrus to canker disease, there were not only some bacteria against Xanthomonas citri pv. citri, but also some cooperative bacteria of canker occurrence like Stenotrophomonas.

Candidatus Liberibacter americanus. [Distribution map].

2007 ◽  
Author(s):  
Keyword(s):  
South America ◽  
Geographical Distribution ◽  
Citrus Sinensis ◽  
Sao Paulo ◽  
Navel Orange ◽  
São Paulo ◽  
Distribution Map ◽  
Murraya Paniculata ◽  
Candidatus Liberibacter ◽  
New Distribution

Abstract A new distribution map is provided for Candidatus Liberibacter americanus Teixeira et al. Bacteria. Hosts: navel orange (Citrus sinensis) and orange jessamine (Murraya paniculata). Information is given on the geographical distribution in South America (Brazil (Sao Paulo)).

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