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首页> 外文期刊>Spanish Journal of Agricultural Research >Short communication. Harvest stage effects on forage yield and quality for rape and turnip genotypes
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Short communication. Harvest stage effects on forage yield and quality for rape and turnip genotypes

机译：简短的交流。收获期对油菜和萝卜基因型的饲用产量和品质的影响

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摘要

The effects of two different harvest stages (full flowering and full podding) on forage yield and quality often forage rape (Brassica napus L. var. oleífera) and three turnip (Brassica rapa L. var. rapa) cultivars were evaluated under rainfed conditions in a Mediterranean type climate at Bursa, Turkey, during the 2002/2003 and 2003/2004 growing seasons. Plant height, branches per plant, leaf length and width, plant part components, and dry matter (DM) and crude protein (CP) yield were measured. Significant differences were observed for the main effects cultivar and harvest stage on DM and protein yields. The CP content of the whole plant and vegetative parts of the Brassica genotypes decreased as plant maturity progressed. In general, turnip cultivars showed better performance in DM yield. Fall sown turnip produced 9.10 and 12.1 Mg ha~(-1) DM yield, with 15.1 and 9.10% CP concentrations, at full flowering and at podding stage, respectively. Significant differences were noted among cultivars for these two parameters. Protein content decreased dramatically in stem parts when maturity advanced from full flower to full pod stages. High leaf percentage and high protein content at full flowering suggest that this should be the preferred forage harveststage for rape and turnip cultivars.
机译：在雨水条件下，评估了两个不同收获阶段（充分开花和完全荚果）对饲草产量（通常是甘蓝油菜）和三个萝卜（甘蓝油菜）的影响。 2002/2003年和2003/2004年生长季节，土耳其布尔萨的地中海型气候。测量了植物的高度，每株植物的枝条，叶的长度和宽度，植物部分的成分以及干物质（DM）和粗蛋白（CP）的产量。观察到主要影响品种和收获阶段对DM和蛋白质产量的显着差异。随着植物成熟度的提高，全基因型和芸苔属营养型部分的CP含量降低。通常，萝卜品种在DM产量上表现出更好的表现。秋季播种的萝卜在盛花期和荚果期分别产生9.10和12.1 Mg ha〜（-1）DM产量，CP浓度分别为15.1和9.10％。在这两个参数之间，品种间存在显着差异。当成熟期从完整的花期发展到完整的荚果期时，茎部的蛋白质含量会急剧下降。在盛花期，较高的叶百分比和较高的蛋白质含量表明，这应该是油菜和芜菁品种的首选收获期。

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