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- Author or Editor: J.R. Baggett x
- HortScience x
Abstract
‘Oregon CR-1’ is a late maturing cultivar of broccoli, Brassica oleracea (Italica group), resistant to clubroot, Plasmodtophora brassicae. Wor. It was released by the Oregon Agricultural Experiment Station for commercial production and as a source of clubroot resistance for plant breeders.
Abstract
Pea (Pisum sativum L.) breeding lines Oregon M176, S423, S434, and S441, were released in 1975 by the Oregon Agricultural Experiment Station. These lines, all of freezing type, were developed primarily for Western Oregon where enation mosaic and pea streak are often seriously damaging to the later plantings of processing peas.
Abstract
‘Oregon Sugarpod’ edible-pod pea (Pisum sativum L.), was released by the Oregon Agricultural Experiment Station in 1971. Initially developed for areas of the Pacific Northwest where enation mosaic virus is a problem, this cultivar appears to be finding wider acceptance because it bears large pods comparable to those of ‘Mammoth Melting Sugar’ but on a dwarf plant similar to the ‘Perfection’ types. In this respect, it may be unique among American cultivars.
Abstract
Clubroot-resistant cabbage (Brassica oleracea L. Capitata group) inbred breeding lines Oregon 100, 123, 140, and 142 have been released by the Oregon Agricultural Experiment Station. They were developed at Corvallis, Ore., in field plots with established infestations of Plasmodiophora brassicae Wor., the causal organism of clubroot. The lines have shown useful field resistance to clubroot in British Columbia and northwestern Washington. These lines have good horticultural characteristics, especially short cores and high solidity, and most combinations among them produce F1 hybrids of excellent type. Some F1 hybrid combinations are of acceptable size and quality for sauerkraut use. One or more of these lines may be usable as commercial clubroot-resistant cultivars for market or home garden.
Abstract
‘Oregon 605’ pea (Pisum sativum L.) was developed primarily for commercial freezing in the Willamette Valley of Oregon. It is resistant to the enation mosaic-red clover vein mosaic virus complex, a limiting factor in Western Oregon pea production. ‘Oregon 605’ is also resistant to powdery mildew, an advantage in seed production areas and possible processing areas such as Northeastern Oregon and Southeastern Washington. ‘Oregon 605’ was released jointly by the Oregon and Washington Agricultural Experiment Stations.
Abstract
‘Oregon 605’ Pea (Pisum sativum L.) was developed primarily for commercial freezing in the Willamette Valley of Oregon. It is resistant to the enation mosaic-red clover vein mosaic virus complex, a limiting factor in Western Oregon pea production. ‘Oregon 605’ is also resisitant to powdery mildew., an advantage in seed production areas and possible processing areas such as Northeastern Oregon and Southeastern Washington. ‘Oregon 605’ was released jointly by the Oregon and Washington Agricultural Experiment Stations.
Abstract
‘Corvallis’ pea was developed for home garden use in western Oregon and other areas of the northwest where pea production is limited by a complex of enation mosaic and pea streak viruses. In these areas, susceptible cultivars must be planted in Feb. or March to escape virus infection, and, even then, serious damage occurs in some seasons. Since wet springs typify most of the areas involved and often make the soil unworkable in Feb.-March, resistant cultivars are needed to permit April-June planting.
An abnormal pod condition, in which bean pods are twisted, sometimes as much as 360°, was discovered in a selection of OSU 5256, a Bush Lake breeding line. The amount of twisting of affected pods and the number of affected pods/plant are both variable. F2 progenies from crosses between twisted pod line 5256-1 and two normal bush Blue Lake cultivars segregate 3 normal:1 twisted, showing that the twisted mutant is controlled by a single recessive gene.
There was no difference in percentage in vitro germination of pollen from stringless pea (Pisum sativum L.) cv. Sugar Daddy and stringy `Oregon Sugarpod II' (OSP) and `OSU 705' (705). However, pollen tubes of `Sugar Daddy' grew more slowly in vitro than those of OSP or 705. Differences in pollen tube growth rate were demonstrated in vivo following time-course pollinations involving reciprocal crosses of `Sugar Daddy' with OSP and 705, along with the selfed parents. After 8 hours, pollen tubes from stringless peas (“stringless” pollen) had entered 13% of the ovules compared with 51% for those from stringy peas (“stringy” pollen). Stringless pollen tubes entered 29% and stringy pollen tubes 66% of the ovules after 10 hours. The slower growth of stringless compared with stringy pollen tubes is a plausible explanation for previously observed deficiencies of stringless plants in segregating populations.