Data for Saline irrigation improves survival of forage sorghum but limits growth and increases toxicity

<b>Data for Saline irrigation improves survival of forage sorghum but limits growth and increases toxicity</b>Moderately saline water has been proposed as a potential irrigation resource for crops such as forage sorghum (<i>Sorghum bicolor</i> × <i>Sorghum bicolor</i> nothossp. <i>drummondii</i>) in drought-prone regions<b>Experiment 1</b> assessed the tolerance of forage sorghum to a range of salt treatments (0, 12.5, 25, 50, 100 and 150 mM NaCl). Plants were grown approx. 4 weeks before they were randomly allocated between treatments (N=15) Mean glasshouse temperature was 28/20 °C (day/night). Plants were organised in a randomised complete block design and watered with 250 mL (to saturation) of water or salt solution two times per week. To avoid a shock response from salinity treatments in both experiments, NaCl concentrations were increased gradually, starting at 25 mM and increasing by 25 mM each watering day until the desired concentration was reached. To prevent the accumulation of salt, pots were flushed with 250 mL once per week. The experimental treatments were maintained for a total seven weeks (including the ramp up time).<b>Experiment 2</b> assessed whether moderately saline irrigation would relieve drought stress by growing sorghum plants under three treatments. All treatments lasted seven weeks. Ten plants were randomly allocated to each of three treatment groups: 0 mM NaCl, 50 mM NaCl, and drought. Plants were organised in a randomised complete block design. Plants in the 0 mM and 50 mM NaCl treatments were watered with 250 mL (to saturation) of water or salt solution once per fortnight. The drought treatment group received no water throughout the treatment period. The experimental treatments were maintained for seven weeks.<br>

**咸水灌溉可提升饲用高粱存活率，但抑制其生长并增强毒性**
中度咸水已被提议作为易旱地区饲用高粱（forage sorghum，*Sorghum bicolor* × *Sorghum bicolor* nothossp. *drummondii*）等作物的潜在灌溉水资源。
**试验1**评估了饲用高粱对一系列盐胁迫处理（0、12.5、25、50、100和150 mM 氯化钠（NaCl））的耐受性。试验植株培育约4周后，被随机分配至各处理组（每组n=15）。温室平均温度为28/20 ℃（昼/夜）。试验采用随机完全区组设计，每周两次以250 mL溶液（至饱和状态）浇灌清水或盐溶液。为避免两次试验中盐胁迫处理引发植株应激反应，氯化钠浓度采用逐步递增方式：从25 mM起始，每次浇灌日提升25 mM，直至达到目标浓度。为防止盐分在栽培基质中积累，每周用250 mL清水冲洗花盆一次。整个试验处理（包括浓度递增阶段）共计持续7周。
**试验2**通过设置三种处理种植高粱植株，评估中度咸水灌溉是否能够缓解干旱胁迫。所有处理均持续7周。将10株植株随机分配至三个处理组：0 mM氯化钠（NaCl）组、50 mM氯化钠（NaCl）组以及干旱组。试验采用随机完全区组设计。0 mM氯化钠组与50 mM氯化钠组的植株每两周以250 mL溶液（至饱和状态）浇灌清水或盐溶液；干旱组在整个处理周期内不浇水。整个试验处理共计持续7周。