|Title:||影響碳水化合物自玉米穗軸轉移至子粒因素之研究-1﹒果穗上位與下位子粒之充實特性||Other Titles:||Factors Affecting the Translocation of Carbohydrates from Cob to Kernels in Corn. 1. Filling Characters of Apical and Basal Kernels on the Ear||Authors:||林淑雰
|Issue Date:||4-Mar-1990||Publisher:||農業試驗所||Journal Volume:||39||Journal Issue:||1||Start page/Pages:||29-33||Source:||中華農業研究||Abstract:||
Corn hybrids Tainung 351 (TNG 351) and Tainung Yu 365 (TNGY 365) were used as experimental material. The two hybrids have the same maternal inbred but different paternal inbred. The latter hybrid was superior to the former in kernel-filling characters. Field experiments were conducted in the fall crop season of 1986 and 1987 to study the pattern of dry matter accumulation for kernels positioned at the apical and basal portions of the ear. Results from this experiment will be served as the basis of further study on the factors affecting the translocation of carbohydrates from cob to kernels in corn. Experimental results indicated that differences in water content and dry weight in either apical or basal kernels existed at early kernel development between TNG 351 and TNGY 365. Although there was no significant difference in maximum kernel filling rate between apical kernels of the two genotypes by the calculation of Richards function, the occurrence of maximum filling rate and effective kernel filling were ealier for TNGY 365 than for TNG 351. Longer kernel filling duration was proposed as the major factor in causing genotypic difference in final apical kernel dry weight. Similar results were observed in basal kernels. This is the first report of a series of papers dealing with the source-sink relationship and physiological and biochemical factors related to kernel filling in corn.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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