Potato varietal discrimination using ground based multiband radiometer |
| |
Authors: | U P Shahi Suman Kumar N P Singh A K Chaubey Yogesh Kumar |
| |
Institution: | (1) International Potato Center, Avenida La Molina 1895, Apartado 1558, La Molina, Lima, Peru |
| |
Abstract: | The potential usefulness of spectral properties and vegetation indices in varietal discrimination of potato genotypes was
studied in the field experiment. Spectral measurements were recorded in different bands in blue (450–520 nm), green (520–590
nm), red (620–680 nm) and infrared (770–860 nm) of the electromagnetic spectrum at different stages during crop growth period.
A ground based hand held multiband radiometer (Model/041) was used for the purpose. The mean per cent green reflectance value
among different genotypes was lowest in genotype MS/86-89, while it was observed highest in genotype JX-216. Significant difference
among these genotypes was found at all growth stages except 6 week after planting. Consequent to variation in spectral reflectance
the vegetation indices like, NDVI, RVI, TVI and DVI showed significant difference among genotypes at all growth stages except
at 8th week after planting. The vegetation indices are good indicators of crop growth and condition. Similarly, fresh weight, dry
weight, and leaf area index were also highest in MS/86-89, followed by KUFRI Bahar and KUFRI Sutlej while in case of leaf
area index it was followed by Kufri Sutlej and Kufri Bahar. JX-23 was highest in chlorophyll content and tuber yield followed
by MS/86-89 and JW-160, while lowest chlorophyll content was seen in MS/89-1095 and poorest tuber yield in MS/89-60. Most
of the genotypes exhibited considerable variation in their spectral response and vegetation indices thereby indicating the
possibility of their discrimination through remote sensing technique. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|