|Title:||Effect of Seed-Blending of Rice Varieties on Grain Yield and Occurrence of Blast Disease||Other Titles:||水稻混合品種對稻穀產量及稻熱病之反應||Authors:||Chen-Seng Huang
|Issue Date:||1-Dec-1987||Publisher:||農業試驗所||Journal Volume:||36||Journal Issue:||4||Start page/Pages:||335-344||Source:||中華農業研究||Abstract:||
Ten blends, formed from two blast (BL) and brown planthopper resistant varieties and one susceptible major variety of rice, were tested with their component varieties in BL free and also prevailing areas. The three varieties are closely related, therefore nearly isogenic. No significant yield difference existed among entries in two tests conducted at the BL free site, while the yield difference was highly significant in the BL nursery test. Those resistant varieties and their blends were all BL resistant. Many blends showed a decrease in observed disease rates from those expected from their component varieties in pure stands, at most by 27.0% to 48.8% in LBL and 44.1% in PBL. The percentage tended to be high at initial and recovering stages of the disease but low at the peak stage. The decrease of disease rates was made possible by a favorable cooperation effect of resistant varieties rendered to the susceptible variety.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.