|Title:||抗褐飛蝨水稻新育成品系之田間表現||Other Titles:||Field Performance of Certain Newly Developed Brown Planthopper Resistant Strains of Rice||Authors:||陳隆澤
|Issue Date:||5-Mar-1972||Publisher:||農業試驗所||Journal Volume:||21||Journal Issue:||1||Start page/Pages:||34-38||Source:||農業研究||Abstract:||
Yield performance of 35 newly developed brown planthopper resistant rice strains selected from the crosses between resistant varieties Mudgo and IR9-60 and susceptible varieties IR 8 and Taichung native 1 were evaluated at Wan-tien-1i farm of the Chiayi Agricultural Experiment Station in the second crop of 1971. Field reaction of 219 strains from the same crosses to brown planthopper infestation under uncontrolled natural condition was also observed at Minhsiung rice farm located 15 km north of the Station.
Preliminary results obtained from this experiment are briefly summarized as follows:
1. Most of the 35 rice strains tested for their yield performance gave considerably higher yields in comparison with check variety Taichung native 1. These strains were also associated with desirable agronomic characters such as short plant height, good tillering ability, medium to long grain size and translucent appearance of the brown rice . However , most of these strains headed 7 to 10 days later than Taichung native 1.
2. Most of 219 rice strains showed resistance to brown planthopper when tested under uncontrolled natural condition , indicating that brown planthopper resistance in the seedling stage appears similar to that of the adult stage 。 The rapid increase in the density of brown planthopper in the susceptible variety Taichung native 1 contrasted highly with low population density in most of the resistant rice strains. As a result, no visible damage was detected in resistant strains even when susceptible Taichung native 1 showed severe damage or developed severe “hopper burn”.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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