Growth, yield and tuber quality of Solanum tuberosum L. under supplemental ultraviolet-B radiation at different NPK levels

被引：12

作者：

Singh, S. ^{[1
]}

Kumari, R. ^{[1
]}

Agrawal, M. ^{[1
]}

Agrawal, S. B. ^{[1
]}

机构：

[1] Banaras Hindu Univ, Dept Bot, Lab Air Pollut & Global Climate Change, Varanasi 221005, Uttar Pradesh, India

来源：

PLANT BIOLOGY | 2011年 / 13卷 / 03期

关键词：

Mineral nutrients; potato; stratospheric ozone; ultraviolet-B; UV-B; PHASEOLUS-VULGARIS; GENE-EXPRESSION; AMBIENT LEVELS; ABSCISIC-ACID; NITROGEN; PHOTOSYNTHESIS; PLANTS; OZONE; DEFICIENCY;

D O I：

10.1111/j.1438-8677.2010.00395.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In many areas, decreases in the stratospheric ozone layer have resulted in an increase in ultraviolet-B (UV-B, 280-315 nm) radiation reaching the Earth's surface. The present study was conducted to evaluate the interactive effects of supplemental UV-B (sUV-B) and mineral nutrients on a tuber crop, potato (Solanum tuberosum L. var Kufri Badshah), under natural field conditions in a dry tropical environment. The nutrient treatments were the recommended dose of NPK (F-o), 1.5 times the recommended dose of NPK (F-1), 1.5 times the recommended dose of N (F-2) and 1.5 times the recommended dose of K (F-3). The response of potato plants to sUV-B varied with nutrient treatment and concentration. sUV-B adversely affected growth, yield and quality of tubers, causing an increase in reducing sugars in the tubers and thus reducing the economic value. Growth and fresh weight of tubers was maximal with sUV-B at 1.5 times recommended NPK, but the dry weight of tubers were highest with the recommended NPK dose. Reducing sugar content was lower in potato plants treated with sUV-B and the recommended NPK than with sUV-B and 1.5 times the recommended NPK. This study thus clearly shows that growing potato with 1.5 times the recommended NPK or 1.5 times the recommended dose of N/K does not alleviate the sUV-B induced changes in yield and quality of tubers compared to the recommended NPK dose.

引用

页码：508 / 516

页数：9

共 66 条

[1] Changes in oxidative stress defense system in wheat (Triticum aestivum L.) and mung bean (Vigna radiata L.) cultivars grown with and without mineral nutrients and irradiated by supplemental ultraviolet-B [J].