Ground cover, photosynthetic rate and tuber yield of potato (Solanum tuberosum L.) crops from seed tubers with different physiological age modified by foliar applications of plant growth regulators

被引：10

作者：

Caldiz, DO ^{[1
]}

Clua, A ^{[1
]}

Beltrano, J ^{[1
]}

Tenenbaum, SD ^{[1
]}

机构：

[1] Natl Univ La Plata, Fac Ciencias Agrarias & Forestales, Inst Fisiol Vegetal, RA-1900 La Plata, Argentina

来源：

POTATO RESEARCH | 1998年 / 41卷 / 02期

关键词：

benzylaminopurine; gibberellic acid; senescence; photosynthesis;

D O I：

10.1007/BF02358440

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The modifying effects of applying the plant growth regulators (PGRs) benzylaminopurine (BAP), gibberellic acid (GA(3)) and BAP+GA(3) on physiological age were studied. Two experiments with two cultivars, differing in rate of physiological ageing (medium-early Pampeana, medium-late Huinkul) and two storage systems were performed during 1988/89 and 1989/90 in two different potato areas of Argentina. In both seasons seed tubers stored in heaps reached an advanced physiological age at planting, compared with tubers from the cold store. Seed tubers of cv. Pampeana were older than those of Huinkul. Compared with control crops, those sprayed with BAP maintained ground cover and photosynthesis for longer, and those sprayed with GA3 for a shorter period. Consequently tuber yield was decreased by GA3 in 1988189, but in 1989/90 all crops treated with PGRs outyielded the control. BAP could overcome effects of advanced physiological age on crop senescence and tuber yield.

引用

页码：175 / 185

页数：11

共 25 条

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[2]

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[3]

Caldiz D. O., 1994, Genetic improvement of field crops., P361

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