AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
Fire blight resistant pear11/7/2023 ![]() The attractive appearance, intense flavor, and sweetness of Bell are well suited to fresh market production in the early season where its looks, taste, texture, and juiciness are important traits for consumer appeal. Large fruit for season, Bartlett shape with thicker neck, attractive, very clean glossy finish, adequate to good fresh eating quality, mild acidity, fine. Bell also scored highest in flavor intensity, flavor balance, and juiciness. Its sugar content, measured as degrees Brix, averages about 15%, making Bell consistently one of the sweetest pears in commercial evaluations. It is a yellow pear with an attractive splash of red color on the exposed side of the fruit (see Figure 1).īell was the most highly rated early pear in sensory comparisons of five selections that included Gem and Bartlett. The fruit is smaller than that of Bartlett, averaging 2.3 inches in diameter and 3 inches in length. This attractive pear has a fit in the fresh market. Fire blight resistance is present in the cultivated apple, but. Out of 13 varieties tested at the Fruit Research and Extension Center (FREC), Bell trees ranked third in productivity with a yield similar to Bartlett. Gem, a new fire blight-resistant pear cultivar boasts high yields, fruit quality, and long fruit storage. The use of fire blight resistant cultivars is another approach to prevent fire blight epidemics. Streptomycin is effective but is not authorized. Pyrus pyrifolia Asian pears are wonderful low maintenance tree They are regular, prolific producers in out test orchards. Severe fire blight can cause trees to die. Bell is resistant to fire blight with good productivity and harvest timing similar to Bartlett.īell trees are vigorous, about 30% larger than Bartlett. Chemical control of fireblight in pear trees, apple trees and related ornamental species has been investigated. Fire blight is a disease that can kill blossoms and shoots and cause dieback of branches from cankers. It was tested as US84909-391 at the Appalachian Fruit Research Station in West Virginia and evaluated at the Penn State Fruit Research and Extension Center since 2011. Future research will focus on further characterizing the resistance regions and developing tools for DNA-informed breeding.Fire blight is a dangerous disease of pome fruit that limits the production of pears in temperate climates.īell was created in 1984 by Dr. The QTL in NJA2R59T69 mapped proximally to the previously identified QTLs and originated from an unknown Asian or occidental source. Shinko fruit is reportedly medium to large (14-20 oz.) with a brown to golden brown russet. The Asian variety Shinko is fire blight resistant Kikusui and Ya Li are somewhat less so. The QTLs identified in the El Dorado × Potomac and Old Home × Bartlett populations are in the same region as QTLs that were previously identified in Harrow Sweet and Moonglow. Watch for and protect secondary blossoms during the three weeks after petal fall, which is the most common time of fire blight infection. Moderately Resistant: Golden Delicious, Empire, Granny Smith, McIntosh, Mutsu, Spartan, Summerred, GoldRush, Nova Easygro Susceptible: Braeburn, Fuji, Gala. ![]() Resistance QTLs were identified on chromosome 2 for each population. An integrated two-way pseudo-testcross approach was used to map quantitative trait loci (QTLs). Genotyping was conducted using the recently developed Axiom Pear 70 K Genotyping Array and chromosomal linkage groups were created for each population. amylovora isolate E153n via the cut-leaf method. Progeny were phenotyped during 20 by inoculating multiple actively growing shoots of field-grown seedling trees with E. As such, three mapping populations (El Dorado × Potomac, Old Home × Bartlett, and NJA2R59T69 × Bartlett) were developed to identify genomic regions associated with resistance to fire blight. Orient and Warren supposed to be very resistant too and bit softer. Kieffer is most resistant pear out there and Ive never seen one of them succumb to fireblight. The cultivars Potomac and Old Home and the selection NJA2R59T69 display resistance to fire blight. Fire blight infection was accountable for the dead of the Bartlett trees used as a control in our experiment. Moonglow is supposed to be resistant to fire blight, so if you are having problems, you are in heavy fire blight area. Growing resistant cultivars is one of the best options for managing fire blight. Fire blight, caused by the bacterial pathogen Erwinia amylovora, is a persistent problem for pear ( Pyrus spp.) growers in the United States.
0 Comments
Read More
Leave a Reply. |