Self-incompatibility, parthenocarpy and reduction of seed presence in ‘Afourer’ mandarin

Gambetta, Giuliana; Gravina, A.; Fasiolo, Carolina; Fornero, Cecilia; Galiger, Sebastián; Inzaurralde, Cristian; Rey, Florencia

doi:10.1016/j.scienta.2013.09.002

Cited by 35 publications

(40 citation statements)

References 23 publications

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“…Furthermore, roles for GSI in seedlessness also have been reported in the mandarin cv. 'Afourer' (Gambetta et al, 2013) and in the lemon (Citrus limon [L.] Burm. F.) cultivars 'Xiangshui' (Zhang et al, 2012) and 'Kagzi kalan' (Kakade et al, 2017).…”

Section: Instances Where Si Is Preferred For Crop Productionmentioning

confidence: 99%

Self-(In)compatibility Systems: Target Traits for Crop-Production, Plant Breeding, and Biotechnology

et al. 2020

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Self-incompatibility (SI) mechanisms prevent self-fertilization in flowering plants based on specific discrimination between self-and non-self pollen. Since this trait promotes outcrossing and avoids inbreeding it is a widespread mechanism of controlling sexual plant reproduction. Growers and breeders have effectively exploited SI as a tool for manipulating domesticated crops for thousands of years. However, only within the past thirty years have studies begun to elucidate the underlying molecular features of SI. The specific S-determinants and some modifier factors controlling SI have been identified in the sporophytic system exhibited by Brassica species and in the two very distinct gametophytic systems present in Papaveraceae on one side and in Solanaceae, Rosaceae, and Plantaginaceae on the other. Molecular level studies have enabled SI to SC transitions (and vice versa) to be intentionally manipulated using marker assisted breeding and targeted approaches based on transgene integration, silencing, and more recently CRISPR knock-out of SI-related factors. These scientific advances have, in turn, provided a solid basis to implement new crop production and plant breeding practices. Applications of self-(in)compatibility include widely differing objectives such as crop yield and quality improvement, marker-assisted breeding through SI genotyping, and development of hybrids for overcoming intra-and interspecific reproductive barriers. Here, we review scientific progress as well as patented applications of SI, and also highlight future prospects including further elucidation of SI systems, deepening our understanding of SI-environment relationships, and new perspectives on plant self/non-self recognition.

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Section: Instances Where Si Is Preferred For Crop Productionmentioning

confidence: 99%

Self-(In)compatibility Systems: Target Traits for Crop-Production, Plant Breeding, and Biotechnology

et al. 2020

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“…In Citrus spp., nonpermanent netting (NPN) is used in certain production regions during a particular stage of the season to protect trees and fruit from damage that could be caused by hail (Wachsmann et al, 2014). It is also used for some citrus cultivars during flowering to exclude bees, thereby preventing crosspollination and unwanted seed development (Gambetta et al, 2013;Gravina et al, 2016;Otero and Rivas, 2017).…”

mentioning

confidence: 99%

“…Certain citrus cultivars have the ability to produce fruit without the flower having to be pollinated or the ovaries having to be fertilized, which is known as parthenocarpy (Mesejo et al, 2016). A cultivar such as Nadorcott mandarin (C. reticulata), for example, is an obligate parthenocarp (Gambetta et al, 2013), which means its ovaries can produce sufficient gibberellins during anthesis to produce fruit in the absence of pollination (Mesejo et al, 2016). 'Nadorcott' mandarin is also sexually selfincompatible (Gambetta et al, 2013;Nadori, 2006), which means that its flowers are unable to produce seed on self-pollination (De Nettancourt, 1977).…”

mentioning

confidence: 99%

“…A cultivar such as Nadorcott mandarin (C. reticulata), for example, is an obligate parthenocarp (Gambetta et al, 2013), which means its ovaries can produce sufficient gibberellins during anthesis to produce fruit in the absence of pollination (Mesejo et al, 2016). 'Nadorcott' mandarin is also sexually selfincompatible (Gambetta et al, 2013;Nadori, 2006), which means that its flowers are unable to produce seed on self-pollination (De Nettancourt, 1977). This trait is advantageous for commercial citrus production because when trees are isolated from certain potential crosspollinators, they can produce seedless fruit (Gambetta et al, 2013;Otero and Rivas, 2017), which are preferred by the market and sold at a premium (Barry, 2006).…”

mentioning

confidence: 99%

“…'Nadorcott' mandarin is also sexually selfincompatible (Gambetta et al, 2013;Nadori, 2006), which means that its flowers are unable to produce seed on self-pollination (De Nettancourt, 1977). This trait is advantageous for commercial citrus production because when trees are isolated from certain potential crosspollinators, they can produce seedless fruit (Gambetta et al, 2013;Otero and Rivas, 2017), which are preferred by the market and sold at a premium (Barry, 2006).…”

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confidence: 99%

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Influence of Nonpermanent Netting on Foliar Spray Deposition, Insect Pest Prevalence, and Production of ‘Nadorcott’ Mandarin (Citrus reticulata)

Stander¹,

North²,

Niekerk³

et al. 2019

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Additional index words. False codling moth, fruit quality, fruit yield, leaf mineral nutrients, fruit fly, shade nettingAbstract. This study aimed to determine the effects of different types of nonpermanent netting (NPN) on foliar spray deposition, insect pest prevalence, and production and fruit quality of 'Nadorcott' mandarin (Citrus reticulata) trees in a commercial orchard at Citrusdal (lat. 32 32#31$S, long. 19 0#42$E), Western Cape, South Africa. The deposition quantity (FPC%) of foliar spray volumes of 3500, 7000, or 15,000 L · ha L1 was greater for leaves of control trees compared with leaves treated with NPN during summer (January) (8.8 vs. 6.1; P = 0.0055) and winter (June) (4.8 vs. 3.1; P = 0.0035). Deposition uniformity (CV%) was better for control leaves during summer (64.9 vs. 75.2; P = 0.0062) and winter (59.6 vs. 80.5; P = 0.0014), and deposition quality (ICD%) was better during winter (79.4 vs. 84.2; P = 0.0393). There were no differences in FPC%, CV%, and ICD% for fruit when foliar spray volumes of 3500 and 15,000 L · ha L1 were used for the control and NPN treatment groups during winter. However, with a foliar spray volume of 7500 L · ha L1 , fruit from the control treatment group had greater FPC% (19.3 vs. 6.1; P = 0.0262), CV% (70.3 vs. 50.9; P = 0.0484), and ICD% (57.1 vs. 79.9; P = 0.0157). There were no differences in macronutrient concentrations between the leaves of trees subjected to control and NPN treatments, but leaf zinc (<81%; P = 0.0317) and iron (<78%; P = 0.0041) concentrations were lower with the NPN treatment. During short NPN treatments, fruit yield was reduced by ' '37% compared with that after control treatment, and longer NPN treatments had no effect on fruit yield. The reduction in fruit yield with NPN was not related to the effects of NPN on foliar spray deposition or to lower leaf micronutrient concentrations. The lower fruit yield during short NPN treatments was most likely caused by fruit drop that was exacerbated by the removal of the NPN. In the long NPN treatment group, fruit damage caused by sunburn was reduced by 17%, but the outer canopy fruit experienced increased wind damage or scarring. Except for the lower titratable acidity content with the shortest NPN treatment and the higher Brix8:TA ratio with two NPN treatments, NPN did not impact other fruit quality attributes. The use of NPN excluded male wild false codling moths (Thaumatotibia leucotreta) (FCM) males; however, it was still possible to capture a very small amount of mass-released sterile FCM and wild fruit flies under the NPN.

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Mandarin fruit quality: a review

et al. 2017

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During the last decade, there has been a continuous rise in consumption and global marketing of fresh, easy-to-peel mandarins, with current annual production of nearly 29 million tons. Nevertheless, most of the existing knowledge on quality traits of citrus fruit comes from research conducted on oranges and grapefruit, which are the main products for the citrus juice manufacturing industry; relatively little is yet known regarding the unique fruit quality traits of mandarins, nor about the great diversity in these traits among the various natural sub-groups and varieties of mandarins. In the present review we discuss the physiological, biochemical, and molecular factors governing key fruit quality attributes of mandarins, including fruit colour, size and shape, ease of peeling, seedlessness, flavour, and nutritional quality. Fruit colour, size, and shape contribute to external appearance; peelability and seedlessness to ease of consumption; and flavour and nutritional quality to internal quality.

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Self-incompatibility, parthenocarpy and reduction of seed presence in ‘Afourer’ mandarin

Cited by 35 publications

References 23 publications

Self-(In)compatibility Systems: Target Traits for Crop-Production, Plant Breeding, and Biotechnology

Self-(In)compatibility Systems: Target Traits for Crop-Production, Plant Breeding, and Biotechnology

Influence of Nonpermanent Netting on Foliar Spray Deposition, Insect Pest Prevalence, and Production of ‘Nadorcott’ Mandarin (Citrus reticulata)

Mandarin fruit quality: a review

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