Şerife BALCI, Volkan Mehmet ÇINAR, Aydın ÜNAY

Pamukta (Gossypium hirsutum L.) Hasat Öncesi Yağış Koşullarında Çenet Özellikleri, Verim Kayıpları ve Tohum Serbest Yağ Asitlerinin Belirlenmesi Üzerine Bir Ön Çalışma

Birçok pamuk ekim bölgesinde bazı yıllarda gerçekleşen hasat öncesi yağışlar, verim ve kaliteyi olumsuz etkilemektedir. Farklı yağış miktarlarının pamuk çeşitlerinde dökülme oranı, çenet özellikleri ve tohum serbest yağ asitleri üzerine etkisi araştırılmıştır. Deneme iki faktörlü Tesadüf Blokları Deneme Desenine göre 4 tekrarlamalı olarak düzenlenmiştir. Çenet derinliği, serbest yağ asitleri oranı ve dökülme oranı yönünden yağış x çeşit interaksiyonu önemli bulunmuştur. 20 mm yağış koşullarında 3,89 kg da-1 olan hasat kayıplarının 125 mm de 23,42 kg da-1 değerine ulaştığı saptanmıştır. Tüm çeşitlerde yağış miktarının hasat kayıplarını artırdığı belirlenmiştir. Geniş çenet yapısına sahip olan Gloria çeşidinin hasat kayıplarının daha az olduğu sonucuna varılmıştır.

Anahtar Kelimeler:

Çenet açıklığı, çenet açısı, dökülme oranı, serbest yağ asitleri, yağış

A Preliminary Study on the Determination of Carpel Characteristics, Yield Losses and Free Fatty Acid Content of Seed under Pre-Harvest Precipitation in Cotton (Gossypium hirsutum L.)

Pre-harvest precipitation in some years in many cotton-growing regions may adversely affect cotton yield and quality. The effect of carpel characters of cultivars on fall out (ground losses) and free fatty acid of seed under different precipitation amounts were investigated. The experiment was arranged in a two-factor Randomized Complete Block Design with four replications. The precipitation x cultivar interaction for carpel depth, free acid content and fall out were significant. Fall out values were between 38.9 kg ha-1 at 20 mm precipitation and 234.2 kg ha-1 at 125 mm precipitation. The amount of fall out in all varieties was negatively affected by the increase in precipitation. Gloria cultivar with a wide carpel had the lowest yield losses on the ground.

Keywords:

Carpel openness, carpel angle, fall out, free fatty acid content, precipitation.,

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