Department of Field Crops, Faculty of Agriculture, Isparta University of Applied Sciences, Isparta, 32000, Turkey.
Department of Agriculture Structure and Irrigations, Faculty of Agriculture, Isparta University of Applied Sciences, Isparta, 32000, Turkey.
BMC Plant Biol. 2024 Feb 26;24(1):135. doi: 10.1186/s12870-024-04772-8.
The production of crops depending on many factors including water, nutrient, soil types, climate and crops types, water stress and drought is in one of the important factors affecting crop productivity. The experiment was conducted in pots to evaluate the effect of biofertilizers (Bacillus simplex) with deficit irrigations on the early development and growth of maize crop under greenhouse condition. Pre sowing seed was inoculated with strain of bacteria (B+/B-) and different irrigation levels (no stress: 100% (I) and deficit irrigation: 75 (I), 50 (I), 25 (I) % of required water amount to reach pot capacity) was performed. Data was collected on different morphological characteristics and root characteristic of maize crop. Highest plant height (125 cm), stem diameter (18.02 mm), leaf area (350 cm), plant weight (180.42 g in fresh, 73.58 g in dry), root length (92.83 cm) root ((91.70 g in fresh, (28.66 g in dry) weight were recorded in pots applied with 100% irrigation followed by 75%. Bacillus treated plants showed significant increase in leaf area (214.20 cm), plant fresh weight (91.65 g) and dry weight (42.05 g), root length (79.20 cm), root fresh (53.52 g) and dry weight (16.70 g) compared with control (without bacteria). Likewise highest relative water content of leaf was observed with I followed by I and I respectively. Highest water use efficiency was recorded as 0.67 g pot mm in I with B + treatment. Likewise, Bacillus inoculated pots resulted in increased water use efficiency (0.44 g pot mm) compared with no application (0.36 g pot mm). It can be endorsed from the outcome that Bacillus inoculation increased plant biomass, root biomass of maize and water use efficiency during early growth stage of maize despite of water stress and can be used under limited water condition for crop combating during moderate to lower stress conditions.
作物的生产取决于许多因素，包括水、养分、土壤类型、气候和作物类型，水分胁迫和干旱是影响作物生产力的重要因素之一。本实验在盆栽条件下，评估了生物肥料（简单芽孢杆菌）与亏缺灌溉相结合对温室条件下玉米早期发育和生长的影响。播种前种子接种了细菌（B+/B-）菌株，并进行了不同的灌溉水平（无胁迫：100%（I）和亏缺灌溉：75（I）、50（I）、25（I）%达到盆容量所需水量）。收集了不同形态特征和玉米作物根系特征的数据。在 100%灌溉的处理中，植株高度（125 厘米）、茎直径（18.02 毫米）、叶面积（350 平方厘米）、植株重量（鲜重 180.42 克，干重 73.58 克）、根长（92.83 厘米）和根重（鲜重 91.70 克，干重 28.66 克）最高，其次是 75%灌溉处理。与对照（无细菌）相比，芽孢杆菌处理的植株叶面积（214.20 平方厘米）、植株鲜重（91.65 克）和干重（42.05 克）、根长（79.20 厘米）、根鲜重（53.52 克）和干重（16.70 克）均显著增加。同样，I 处理的叶片相对含水量最高，其次是 I 和 I 处理。在 I 处理下，B+处理的水利用效率最高，为 0.67 g 盆 mm。同样，与不施芽孢杆菌相比，芽孢杆菌接种的盆中水分利用效率（0.44 g 盆 mm）增加。从结果可以看出，尽管存在水分胁迫，芽孢杆菌的接种仍能增加玉米的植株生物量、根系生物量和水利用效率，并可在有限的水分条件下用于作物在中低胁迫条件下的抗旱。
