Respon Fisiologis Kedelai [Glycine max (L.) Merr.]Varietas Grobogan terhadap Tingkat Naungan yang Berbeda

The study aimed to analyze physiological responses of soybean varieties Grobogan to different shade levels, including changes in amount of leaf total protein content, photosynthetic pigments content, index stomata and stomata gap width and vegetative growth. The research was conducted using a Completely Randomized Design (CRD) one factor, that is shading level with three treatments: no shading, 50% shade and 70% shade. Data were analyzed by ANOVA and continued by DMRT at 95% confidence level. The results showed that Soybean varieties Grobogan is able to adapt and survive under 50% and 70% shade. Varieties Grobogan responded to increased shade by increasing leaf total protein content and photosynthetic pigments content and decreasing index stomata and stomatal gap width.  Shaded plants showing stunted vegetative growth, seen by decreased of leaf number, leaf area, leaf thickness, stem height, stem diameter, root length and plant weight.Penelitian bertujuan menganalisis respon fisiologis kedelai varietas Grobogan terhadap tingkat naungan berbeda, meliputi perubahan kadar protein total daun, kadar pigmen fotosintetik, indeks stomata dan lebar celah stomata serta pertumbuhan vegetatif tanaman. Penelitian menggunakan Rancangan Acak Lengkap (RAL) satu faktor berupa perbedaan tingkat naungan yaitu: tanpa naungan, naungan 50% dan naungan 70%. Data dianalisis menggunakan ANOVA dan dilanjutkan dengan uji DMRT pada taraf kepercayaan 95%.Hasil penelitian menunjukkan bahwa kedelai varietas Grobogan mampu beradaptasi dan bertahan hidup di bawah naungan 50% dan 70%. Kedelai varietas Grobogan merespon peningkatan taraf naungan dengan meningkatkan kadar protein total daun dan pigmen fotosintetik serta menurunkan indeks stomata dan lebar celah stomata. Tanaman ternaungi mengalami pertumbuhan vegetatif yang terhambat dilihat dari penurunan jumlah daun, luas daun, tebal daun, tinggi batang, diameter batang, panjang akar dan bobot tanaman