Seed yields of 15 soybean genotypes were evaluated in three locations i.e. Bursa, Samsun and Konya under main crop conditions through summer seasons from 2014 to 2016. The used design was a randomized complete block design with four replications. This research is aimed to estimate the stability parameters of seed yield of 15 soybean genotypes by used different stability analysis methods over nine environmental conditions and to study interrelationship among these stability methods. Genotypes, environments and genotype by environment interactions (GEI) played a significant role in terms of seed yield in this study. The genotypes KAMD 03, BATEM 306, BDUS 04, ARISOY and ATAEM 07 had higher seed yields and regression coefficient values above 1.0. These genotypes are sensitive to environmental variations and would be suggested for cultivation under favourable conditions, whereas KAMD 01, KASM 02 and KASM 03 with bi<1 and lowest average yields were poorly adapted across unfavourable environment conditions. The genotype BDSA 05 having regression coefficient below 1.0 and higher seed yield than average yield were goodly adapted to unfavourable environment conditions. The results of most parametric and non-parametric stability analyses showed that genotypes BDUS 04, KASM 02, KASM 03, KAMD 03 and BDSA 05 were stable genotypes. These genotypes were demonstrated superior adaptability with high yield performances in many environments. Results of correlation analysis indicated that seed yield was significantly correlated with Ri 2 (P<0.05), Si(3) (P<0.05), Di (P<0.01), Si(6) (P<0.01), TOP (P<0.01) and showed a negative and significant correlation with Pi and RS (P<0.01). The coefficient of regression (bi) had positively significant associated with CVi, αi, Si(3) and Si(6) (P<0.01) and with the superiority parameter (TOP) (P<0.05).

This research was conducted in Bursa, Marmara region, Turkey, in order to determine grain yield and some morphological traits which affect the silage maize response to different irrigation water amounts. The grains' percentage of crude oil and of crude protein were determined. Field experiments were planned following randomized complete block design with three replications and included six irrigation treatments. Irrigation treatments were created as water levels of pan evaporation (Epan) applied via drip irrigation [1.25 × Epan (I125), 1.00 × Epan (I100), 0.75 × Epan (I75), 0.50 × Epan (I50), 0.25 × Epan (I25) and 0 × Epan (I0)]. The highest value of grain yield was found to be 18,268 kg ha -1 in the I125 treatment, which represents excessive water. A quadratic relationship between grain yield and irrigation water applied was obtained. Deficit irrigation decreased grain yield and yield components except the percentage of crude oil and crude protein of grain, but improved the efficient use of irrigation water. Relationships between the grain yield and each yield component were positively significant. The highest correlation coefficient in the research gave the relationship between grain yield and plant height (r=0.957 ** ). The results revealed that 1.25 × Epan and 1.00 × Epan treatments are preferable for higher yield. The results of this study also suggest that if water is limited, the application of 0.75 × Epan can be recommended as optimal treatment, because the best compromise among yield, yield components, quality and irrigation water use efficiency for maize was achieved with this application.

This research was conducted in Bursa, Marmara region, Turkey, in order to determine grain yield and some morphological traits which affect the silage maize response to different irrigation water amounts. The grains’ percentage of crude oil and of crude protein were determined. Field experiments were planned following randomized complete block design with three replications and included six irrigation treatments. Irrigation treatments were created as water levels of pan evaporation (Epan) applied via drip irrigation [1.25 × Epan (I125), 1.00 × Epan (I100), 0.75 × Epan (I75), 0.50 × Epan (I50), 0.25 × Epan (I25) and 0 × Epan (I0)]. The highest value of grain yield was found to be 18,268 kg ha-1 in the I125 treatment, which represents excessive water. A quadratic relationship between grain yield and irrigation water applied was obtained. Deficit irrigation decreased grain yield and yield components except the percentage of crude oil and crude protein of grain, but improved the efficient use of irrigation water. Relationships between the grain yield and each yield component were positively significant. The highest correlation coefficient in the research gave the relationship between grain yield and plant height (r=0.957**). The results revealed that 1.25 × Epan and 1.00 × Epantreatments are preferable for higher yield. The results of this study also suggest that if water is limited, the application of 0.75 × Epan can be recommended as optimal treatment, because the best compromise among yield, yield components, quality and irrigation water use efficiency for maize was achieved with this application.

Results of correlation analysis indicated that seed yield in narbon bean (Vicia narbonensis L.) was correlated positively with harvest index, biological yield, weight, number of seed and number of pod per plant and also plant height and number of plant per m 2 . Path coefficient analyses revealed that harvest index and biological yield had higher positive direct effects on seed yield than other variables. Stepwise multiple regression analysis showed that 95.1% of total variation in seed yield could be explained by the variation in harvest index, biological yield and plant height. Results suggest that harvest index and biological yield are primary selection criteria for improving seed yield in narbon bean.

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Immature embryos from 15 sunflower genotypes (five restorers, five cytoplasmic male steriles, and five maintainers) were studied with the aim to shorten the seed to seed cycle, because seed maturation in sunflower takes 50-60% of the life cycle duration (120-150 days). This technique allows the production of fertile plants from immature embryos by reducing the breeding cycle. Ten days after pollination immature embryos were dissected from seeds grown in field plants (SGFP) and were transferred to MS medium allowing shoot and root development for 5-10 days. Young plantlets were transferred to soil, developed to maturity, and were then self pollinated and set seed. The first cycle of immature embryo-raised plants (ERP) was obtained. When these plants were at the flowering stage, 10-day-old embryos were dissected and the 2 nd cycle of ERP was obtained. The plants at the flowering stage for obtaining the 3 rd cycle are in the growth chamber at the moment.The majority of cultured embryos developed into vigorous plantlets with 3-6 leaves. Out of the 1710 immature embryos, the average response of the explants was 93.1% (1591) showing morphogenesis with a minimum of 42.5 [N Record 109/Sanay 1-2(N)] and a maximum of 100% [(PR6404 (cms), Narmo Sanay 6-1 (cms), RIM 1-5 (cms), BGC0565 (N), N Record 109/Iscra (N), RHA 04, RHA 06, RHA 10, RHA 14, RHA 15]. Seventy percent of the developed plantlets had vigorous roots. They were transplanted into containers with a 1:1:2 peat: perlite: soil mixture (v/v) at 24 ± 2°C in 16 h/8 h (light/dark) in a growth chamber. Only 67.3% of them were grown to maturity, either self-pollinated or pollinated with maintainers and set seeds. The overall result was an average of 40-50 regenerated and matured plants per 100 immature zygotic embryos.

Bu araştırma, Bursa koşullarında ikinci ürün olarak yetiştirilen mısırda uygun bitki sıklığı ve ekim şeklinin belirlenmesi ve bunların verim ve kalite üzerine olan etkilerini incelemek, bu konuda ileride yapılacak araştırmalara ışık tutmak ve bölge çiftçilerine yardımcı olmak amacıyla yapılmıştır. Bu çalışmada bitki materyali olarak Bora çeşidi kullanılmıştır. Deneme, 2009-2010 yıllarında Uludağ Üniversitesi Ziraat Fakültesi Tarımsal Araştırma ve Uygulama Merkezi'nde yürütülmüştür. Bölünmüş Parseller Deneme Desenine göre 3 tekrarlamalı olarak kurulmuştur. Denemede 3 farklı ekim şekli (50 cm, 70 cm ve 25+45 cm) ve 4 farklı bitki sıklığı (5500, 7500, 9500 ve 11500 bitki da-1) kullanılmıştır. İki yıl süren bu araştırmada, bitki boyu, sap kalınlığı, yaprak oranı, yeşil ot verimi, kuru madde verimi, ham protein oranı belirlenmiştir. Araştırmada, bitki boyu ekim şekillerinden etkilenmiş, bitki sıklığı arttıkça bitki boyunda artış saptanmıştır. Çift sıra ekim şeklinin daha kalın saplı bitki oluşturduğu belirlenmiştir. Artan bitki sıklıklarıyla birlikte sap kalınlığında azalma meydana gelmiştir. Çift sıra ekim yönteminde (25+45 cm) yaprak oranı, diğer ekim şekillerine göre daha yüksek bulunmuştur. En yüksek yaprak oranı, en yüksek bitki sıklığında elde edilmiştir. Araştırma sonuçlarına göre, çift sıra ekiminde yeşil ot verimi önemli oranda artmıştır. Artan bitki sıklığı ve birim alandaki bitki sayısının da artmasıyla yeşil ot verimde artış olmuştur. Sonuç olarak, denemenin tarımsal ekolojik koşullarında ikinci ürün mısır üretiminde 11500 bitki da-1 yoğunluğu ve 25+45 cm ekim şeklinin daha iyi sonuç verdiği saptanmıştır.