A new mandarin tree named AC4916 notable for its flavorful seedless fruit.

A new mandarin tree named AC41114 notable for its attractive, later-maturing seedless fruit.

A new variety of Citrus Mikanken16 that has dark orange fruit color, no seeds, high juiciness, orange-like flavor, ease of peeling the fruit by hand, good appearance and good tasting qualities.

A new and distinct cultivar Citrus limon (L.) Brum.f. is provided which displays a substantially different time for initial fruit harvest than the standard Primofiori cultivar (non-patented in the United States). The attractive juicy fruit of the new cultivar commonly is initially ready for harvest by about the end of March. This follows greatly the typical October initial harvest time for the Primofiori cultivar. The new cultivar is a diploid, and displays a relatively dense spreading growth habit. The supply of the fresh fruit market for consumption, use in beverages, and in cooking is facilitated at an atypical season of the year by the new cultivar.

UFR-17 is a new and distinct allotetraploid citrus rootstock for tree size control and improved disease resistance. UFR-17 has shown a positive reaction to Huanglongbing disease (HLB, or citrus greening disease) in multiple experimental field trials. Scion trees grafted on this rootstock show a reduced frequency of infection and reduced disease symptoms once infected as compared to commercial diploid rootstocks.

Numerous plant microbes, including the vascular-limited Candidatus spp.causal agents of citrus greening and potato zebra chip diseasesare non-culturable. The present disclosure relates, according to some embodiments, to compositions, methods and systems for culturing such organisms. For example, the present disclosure relates to methods for culturing, propagating, and characterizing fastidious vascular-colonizing microbes using a hairy root system (e.g., in vitro, in planta). The present disclosure relates, in some embodiments, to methods for cultivating a fastidious plant microbe including: contacting a plant (e.g., a tomato plant, a potato plant, a citrus plant) colonized by a fastidious plant microbe (e.g., Xylella fastidiosa, Candidatus Liberibacter spp.) with a suspension of R. rhizogenes under conditions that permit induction of hairy roots colonized with the fastidious plant microbe, and propagating the colonized microbial hairy roots.

A new and distinct navel orange distinguished by production of fruit that combines late-season maturity and a strong orange pigmented rind (UPOV Group 20) with a pink albedo. It further distinguishes itself with a deep orange-red flesh. Flesh, rind, albedo, and juice are deeply pigmented with lycopene'. The new cultivar is a Citrus sinensis, useful for commercial fruit production.

UFR-2 is a new and distinct allotetraploid citrus rootstock for tree size control and improved disease resistance. UFR-2 has shown a positive reaction to the Huanglongbing disease (HLB, or citrus greening disease) in multiple experimental field trials. Scion trees grafted on this rootstock show a reduced frequency of infection and reduced disease symptoms once infected as compared to commercial diploid rootstocks.

UFR-4 is a new and distinct allotetraploid citrus rootstock for tree size control and improved disease resistance. UFR-4 has shown a positive reaction to the Huanglongbing disease (HLB, or citrus greening disease) in multiple experimental field trials. Scion trees grafted on this rootstock show a reduced frequency of infection and reduced disease symptoms once infected when compared to commercial diploid rootstocks. UFR-4 rootstock also showed tolerance to the Diaprepes/Phytophthora complex in greenhouse tests.

UFR-16 is a new and distinct diploid citrus rootstock for improved disease resistance. UFR-16 has shown a positive reaction to the Huanglongbing disease (HLB, or citrus greening disease) in experimental field trials. Scion trees grafted on this rootstock initially show a reduced frequency of infection, and reduced disease symptoms once infected as compared to commercial diploid rootstocks. UFR-16 rootstock also showed tolerance to the Diaprepes/Phytophthora complex in greenhouse tests.