Adoption of rhizoma peanut (RP; Arachis glabrata Benth.) is limited by slow establishment. Understanding the factors affecting RP biomass partitioning during the shoot emergence period may aid in developing management practices that enhance establishment. A growth chamber study was conducted to determine shoot emergence and overall growth responses of two RP entries (germplasm Ecoturf and ‘UF Tito’) to day/night temperature (20/10 and 30/20 °C). A greenhouse study evaluated similar responses to rhizome propagule length (10‐ and 20‐cm fragments) and presence or absence of an apical shoot. Shoot emergence was greater (4.9 vs. 2.6 pot⁻¹) at a day/night temperature of 30/20 than 20/10 °C. Root‐rhizome/shoot ratio was much less when RP was grown at 30/20 °C (1.4) than at 20/10 °C (8.5). Growth of more upright‐growing UF Tito was superior to Ecoturf at the greater temperature. In the greenhouse experiment, number of shoots emerged from rhizomes was generally greater with smaller rhizome fragments (10 cm) from which apical shoots were removed, especially for UF Tito. Root‐rhizome/shoot ratio decreased with presence of an apical shoot due to increased shoot biomass, especially for Ecoturf. We conclude that greater growth temperature after planting results in more rapid shoot emergence and greater growth during early establishment, likely favoring summer vs. early spring planting dates, especially for UF Tito. Although RP biomass partitioning responded to presence of an apical shoot on propagules, rhizome length did not affect partitioning and presence of an apical shoot did not consistently influence biomass responses, suggesting no particular requirement for rhizome fragmentation prior to planting.

中文翻译：

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生长温度和根茎繁殖特性影响根茎花生出苗和生物量分配

建立缓慢限制了对花生（RP；花生）的采收。了解在出苗期影响RP的生物量分配的因素可能有助于发展管理实践，以增强建立。进行了一个生长室研究，以确定两个RP条目（种质Ecoturf和“ UF Tito”）对昼夜温度（20/10和30/20°C）的枝条出苗和总体生长反应。温室研究评估了对根茎繁殖体长度（10 cm和20 cm碎片）以及是否存在根尖的类似反应。芽出苗率更高（4.9比2.6锅^-1）在30/20的昼/夜温度高于20/10°C。当RP在30/20°C（1.4）下生长时，根茎/茎比远低于20/10°C（8.5）。在较高温度下，直立生长的UF Tito的生长优于Ecoturf。在温室实验中，从根茎上出现的芽的数量通常更大，根茎碎片更小（10厘米），根尖上的茎被去除，尤其是对于超滤铁。根茎/茎比随着茎尖生物量的增加而降低，因为茎尖生物量的增加，尤其是对于Ecoturf。我们得出的结论是，播种后较高的生长温度会导致较快的枝条出苗和早期定植期间的更大生长，这可能有利于夏季和春季早播，尤其是UF Tito。