Su eksikliğinin Abelmoschus esculentus (L.) Moench cv. "Sultani"nin bazı fizyolojik özellikleri üzerine etkisi

Öz

Bu çalışma, Türkiye'de yaygın olarak yetiştirilen ve Trakya Bölgesi'ne iyi adapte olan bamyada (Abelmoschus esculentus (L.) Moench cv. "Sultani") suni kuraklık stresinden sonra bazı fizyolojik değişiklikleri belirlemek amacıyla gerçekleştirilmiştir.

Anahtar Kelimeler

• Abelmoschus esculentus cv. Sultani,su stresi,yaprak su potansiyeli,yaprak bağıl su içeriği,zar hasarı

The Effect of Water Deficit on some Physiological Properties of Abelmoschus esculentus (L.) Moench cv. "Sultani"

Öz

This study was conducted to determine the some physiological changes after the artificial drought stress in okra

(Abelmoschus esculentus (L.) Moench cv."Sultani") which is widely cultivated in Turkey and well adapted to Trakya

region. After germination, the seedlings were grown under normal growing conditions in an unheated plastic

greenhouse until they reached to 2-4 leaf. They were planted in the field with a distance of 50 cm between rows and

25 cm in rows. The plants normally irrigated until flowering time. After then, water constraint applied for drought

stress. Control plants were irrigated to bring to field capacity, when they lost 50% of usable water capacity in root

region. Other plots were irrigated to 0%, 25% and 50% of applied water in control parcel. Water restriction was done

once a week and then measurements were made. During the experiment, leaf water potential (-MPa), leaf relative

water content (%), membrane damage in leaf cells (%) and total chlorophyll (SPAD value) in leaves were determined.

As results, it has been determined that as the amount of water restriction goes from control to 0%, the leaf water

potential decreases and the plants grown at 0% water constraint show severe damage symptoms. It has also been

found that the amount of leaf-relative water content and the total amount of chlorophyll are reduced in a manner

contrary to the increase in drought stress. Contrary to other criteria, membrane damage and leaf temperatures

increase in leaf cells due to the increase in the amount of water restriction.

Anahtar Kelimeler

• Abelmoschus esculentus cv. Sultani,water stress,leaf water potential,leaf relative water content

Kaynakça

1. Akdemir, B., B. Kayisoglu and I. Kavdir, 1994. The use of MSTAT statistic package program. Trakya Univ. Faculty of Agriculture Publication No: 203, Supplementary Course Book No: 7, Tekirdag.