Inheritance of Resistance to Bacterial Spot (Xanthomonas Campestris Pv. Visicatoria (Doidge) Dye) in Peppers (Capsicum Spp.)

From 201 lines of pepper tested for resistance to bacterial spot, 17 P.I. lines which were introduced from India and 3 which were introduced from Central or South America showed resistance. Seven isolates of Xanthomonas campestris pv. vesicatoria collected from various locations in Hawaii showed no differences in virulence. Pepper line 23-1-7 which has been reported by A. A. Cook to have resistance to race 2 of the pepper strain of X. campestris pv. Vesicatoria in Florida was susceptible to all the isolates, which indicates that the strain that occurs in Hawaii is pepper strain race 1 and not race 2. The inoculation method generally used was infiltration with an inoculum level of 10 cells/ml. Infiltration was accomplished by forcing the inoculum into the underside of leaves of 1 month old seedlings with a DeVilbiss air brush connected to a compressor set at 20 psi until an area about 5 mm in diameter appeared water-soaked. Disease was graded 1 week after inoculation on a scale of 1 (low disease) to 4 (high disease). The results obtained from this inoculation method were highly correlated with the field performance of lines with varying degrees of resistance and of individual plants of an F2 population of the cross Keystone x line 112 (P.I. 308787). Twelve resistant lines were crossed to the susceptible cultivar Keystone to study the inheritance of resistance. A hypersensitive reaction found in line 79 (P.I. 271322) was controlled by a single dominant gene. An "immune" response found in line 177 (P.I. 163192) was controlled by a single recessive gene. Both lines 79 and 177 also showed quantitatively inherited resistance as well. Lines 47 (P.I. 244670), 127 (P.I. 369994), 112 (P.I. 308787), 110 (P.I. 297495), 4 (P.I. 163192), 34 (P.I. 224451), 43 (P.I. 241670), 119 (P.I. 322719), 137 (P.I. 377688), and 131 (P.I. 369998) had only quantitatively inherited resistance. Lines 79, 177, 47, 127, and 112 were the most effective in transmitting resistance. Crosses were made between line 79 (hypersensitivity), line 177 (immunity), and line 43 (quantitative factors). When line 79 and 177 were crossed, the hypersensitivity gene was masked by the immunity gene to give an F2 ratio of 9 hypersensitive ; 4 immune : 3 neither. The hypersensitive character segregated normally in the cross of lines 79 and 43, but the segregation of the immunity character was altered in the cross of lines 177 and 43. The correlation coefficient between pungency and disease in the greenhouse of the F2 population of the cross of Keystone (low pungency) x line 112 (P.I. 308787) (high pungency) was not significant, but in the field it was significant (-0.216), suggesting that high pungency may contribute some field resistance to bacterial snot

Successful treatment with interferon of chicken pox in children with acute leukemia.

Childhood leukemia, especially acute lymphocytic leukemia, can now be completely cured by a multimodality approach in one out of every two patients. Since prolonged maintenance therapy with anti-cancer agents for three years is required for complete cure, a significant problem during this course of treatment is death due to secondary infection. Those with childhood leukemia receiving anti-cancer chemotherapy who became secondarily injected with chicken pox can now be treated successfully with interferon in the four cases reported here. Chicken pox was cured even while one of them was in relapse. Therefore, it can be said that a bright prospect, namely interferon, is on the horizon in the treatment of secondary viral diseases associated with acute leukemia.</p

The present status of childhood cancer therapy in Korea.

We have studied the incidence pattern of childhood cancers in Korea. Although the incidence of many tumors in Korea is similar to that in other countries, the incidence of acute myelogenous leukemia, non-Hodgkin's lymphoma and hepatoma is greater in Korean children. Yonsei Cancer Center commenced a study of multi-modality treatment of childhood cancers in July 1974. The most striking improvement of survival rate was seen in patients with acute lymphocytic leukemia (50% at 5 years), Wilms' tumor (65% at 5 years), neuroblastoma (45% at 2 years), osteogenic sarcoma (55% at 2 years) and malignant histiocytosis (20% at 5 years). This study is an attempt to create a basic framework providing the best possible treatment of childhood cancer in Korea. The data obtained in Korea are briefly compared with those in Japan and the United States.</p

Accurate Localization of 3D Objects from RGB-D Data Using Segmentation Hypotheses

In this paper we focus on the problem of detecting ob-jects in 3D from RGB-D images. We propose a novel frame-work that explores the compatibility between segmentation hypotheses of the object in the image and the corresponding 3D map. Our framework allows to discover the optimal lo-cation of the object using a generalization of the structural latent SVM formulation in 3D as well as the definition of a new loss function defined over the 3D space in training. We evaluate our method using two existing RGB-D datasets. Extensive quantitative and qualitative experimental results show that our proposed approach outperforms state-of-the-art as methods well as a number of baseline approaches for both 3D and 2D object recognition tasks. 1