High Carbon Requirements for Seed Production in Soybeans [Glycine max (L.) Merr.](Crop Physiology & Ecology)

スポンサーリンク

概要

• 論文の詳細を見る

• In soybeans, increase in the dry weight of seed (IWS) during the seed-filling period (SFP) is nearly half that of the whole plant (IWP). Hence, the contributions of assimilate during SFP to seed growth in soybeans is apparently lower than that in other cereal crops. However, analysis of the assimilate budget for seed production based on dry matter could be misleading in soybeans because the carbon (C) contents of seed and that of other organs are different due to the differences in lipid and protein content and respiration loss in each organ results in underestimation of the C contribution to seed production. In field soybeans, irrespective of shading and thinning, IWS/IWP and harvest index (HIW) for dry weight were slightly lower than ICS/ICP and HIC for C, respectively. Of the ^<13>C fed at the vegetative stage and early SFP, 3.4% and 16.4%, respectively were accumulated in the seed, 0.9% and 28.2%, respectively, in the pod shell and 26.8% and 37.8%, respectively were respired before maturity. Ninety-six percent of seed C was assimilated during the SFP. Respiratory loss of ^<13>C fed at the early SFP was larger than that from ^<13>C at the vegetative stage, showing that seed production requires much more C than leaf or stem growth. These results suggest that the difference in C contents between plant organs has little effect on the estimation of assimilate partition into soybean seeds based on dry matter, and high respiration loss for seed growth reduces the partition of dry matter into seeds.

• 日本作物学会の論文

著者

• Kobata Tohru

  Faculty Of Life And Environmental Science Shimane University

• Kakiuchi Jin

  Agricultural Experimental Station Of Wakayama Prefecture

関連論文

• Non-Hydraulic Factor Controls the Leaf Diffusive Conductance of Rice Grown in Anaerobic Reduced Soils
• The Relationship between Dry Matter Increase of Seed and Shoot during the Seed-Filling Period in Three Kinds of Soybeans with Different Growth Habits Subjected to Shading and Thinning(Crop Physiology and Ecology)
• Root contribution to stay-green in rice (Oryza sativa L.) subjected to desiccated soils in the post-anthesis period
• Convenient Estimation of Unfertilized Grains in Rice
• Liquid Culturing of Detached Panicles of Rice : Cooled Culture Solutions Extend the Period of Growth
• High Carbon Requirements for Seed Production in Soybeans [Glycine max (L.) Merr.](Crop Physiology & Ecology)

スポンサーリンク