A MODEL FOR PREDICTING LEAF AREA IN YOUNG AND OLD LEAVES OF GREENHOUSE TYPE TOMATO (Lycopersicon esculentum, Mill.) BY LINEAR MEASUREMENTS

Yıl 2008, Cilt: 23 Sayı: 3, 154 - 157, 01.12.2008

Mehmet Beyhan Sezgin Uzun Dilek Kandemir Harun Özer Murat Demirsoy

Öz

The aim of this study was to produce a simple leaf area estimation model by linear measurements for young and old leaves of greenhouse type tomato. Starting from early plant growth period to mature plant stage, a total of 150 leaves were collected to carry out linear measurements and produce a leaf area estimation model for tomato. Therefore, firstly a relationship between mean leaflet length (MLL) of a main compound tomato leaf and the length of the longest leaflet (LLL) of the top three leaflets of the main compound leaf (MLL(cm)=-0.36+1,02*LLL–0,02*LLL2, r2=0.98, Equation 1). Secondly, an equation was obtained by plotting actual leaf area measured by PLACOM Digital Planimeter against mean leaflet length (MLL), longest leaflet length of the top three leaflets of the main leaf (LLL) and longest leaflet width (LLW) of the top three leaflets by using multi-regression analysis. The leaf area estimation model was found as LA (cm2) =31,6–18.41*MLL+2.40*MLL2+0.45*LLL2*LLW, r2=0.99 (Equation 2). Standard errors of all subsets of the independent variables were found to be significant at p<0.001). Lastly, Equation 1 was combined with Equation 2 and final equation for leaf area estimation was obtained to be LA=31.6–18.41*(-0.36+1.02*LLL–0.02*LLL2)+2.40*(-0.36+1.02*LLL–0.02*LLL2) 2 +0.45*LLL2*LLW (Equation 3)

Anahtar Kelimeler

Leaf shape, Leaflet length, Leaflet width, Modeling, Leaf area, Tomato

GENÇ VE YAŞLI SERA TİPİ DOMATES (Lycopersicon esculentum, Mill.) YAPRAKLARINDA DOĞRUSAL ÖLÇÜMLERLE YAPRAK ALANI TAHMİN MODELİ

Öz

Bu araştırmanın amacı sera tipi domatesin genç ve yaşlı yapraklarında doğrusal ölçümlerle basit bir yaprak alanı tahmin modeli oluşturmaktır. Bitki gelişiminin başlangıç aşamasından başlayarak olgun safhaya kadar yaprak alanı tahmin modeli oluşturmak ve doğrusal ölçümler yapmak amacıyla toplam 150 yaprak toplandı. Bu amaçla, ilk olarak domates yaprağı ana bileşenlerinin ortalama yaprakçık uzunluğu (OYU) ve yaprak ana bileşenlerinin ucundaki en uzun üç yaprakçığın yaprakçık uzunluğu (YYU) arasındaki ilişki (OYU(cm)= -0.36+1,02*YYU -0,02*YYU 2, r2=0.98, Eşitlik 1) belirlendi. İkinci olarak, çoklu regresyon analizi kullanılarak ortalama yaprakçık uzunluğu (OYU), ana yaprağın uç kısmındaki en uzun üç yaprakçığın uzunluğu (YYU), uç kısımdaki en uzun üç yaprakçığın genişliğine (YYG) karşılık gelen gerçek yaprak alanı dijital planimetre PLACOM ile belirlenerek bir eşitlik elde edildi. Yaprak alanı tahmin modeli, LA(cm2)=31,6-18.41*OYU +2.40* OYU 2+0.45*YYU2* YYG, r2=0.99 (Eşitlik 2) olarak bulunmuştur. Bağımsız değişkenlerin tüm alt verilerinin standart hataları p < 0.001 düzeyinde önemli bulunmuştur. Son olarak, eşitlik 1 ile eşitlik 2 birleştirildiğinde nihai yaprak alanı tahmini (Eşitlik 3) eşitliği elde edilmiştir

Anahtar Kelimeler

Yaprak şekli, Yaprakçık uzunluğu, Yaprakçık genişliği, Modelleme, Yaprak alanı, Domates

Kaynakça

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