English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In growing Japanese radish cv. ‘Gensuke’ during summer, “hollow root”-lengthwise hollowness in the central portion of the root-frequently occurs, which has been attributed partly to high soil temperature. In these experiments, effects of heating and cooling the soil at specified stages of the plant′s growth on the weight increase of the root and the occurence of hollow roots were investigated.1. In the heating experiments, plants were subjected to soil-heating treatments for 15 days and to soil-cooling treatment for the other 45 days. During the heating period, weight increase of the roots was slowed with one exception, while the occurrence of hollow roots was conspicuous when plants were subjected to heating during the first and second 15 days after sowing.2. In the cooling experiments, plants were subjected to soil-cooling treatment for 15 days and to soil-heating treatment for the other 45 days. Weight increase of the roots for 15 days was notably accelerated when they were subjected to cooling treatment during the second 15 days after sowing, and the occurrence of hollow roots was low.From these results, following conclusions were drawn: the formation of secondary meristems in the central portion of the root is strongly influenced by the soil temperature, particularly from the 16th day to the 30th day after sowing; high temperature during that time tends to hinder that formation. Consequently, lysigenous intercellular spaces developed in the central portion of the root are not filled with parenchymatous cells, derived from the secondary meristems, thus causing high occurrence of hollow roots as was observed in the heating treatment during the same period.

engei gakkai zasshi

Effects of Time of High and Low Temperature Treatments on the Growth of Japanese Radish cv. ^|^lsquo;Gensuke^|^rsquo; and on the Occurrence of Hollow Root