Abstract
Forage cactus species exhibit distinct morphological characteristics, which have a relationship to yield and can be affected by different water conditions. The objective was to analyze, with the principal components analysis (PCA), the association between morphological and productivity variables in forage cactus clones in different water regimes. We cultivated, in Serra Talhada, Brazilian semiarid, the Miúda (MIU), Orelha de Elefante Mexicana (OEM) and IPA Sertânia (IPA) clones under four water regimes based on crop evapotranspiration – ETc (0%, 40%, 80% and 120% ETc). Between the years 2016 and 2018, morphological and crop productivity data were obtained. Two main components explained >82% of the total variability of the data, and the relationship between morphological and production variables depended on the clone and the water regime. The production of fresh and dry matter was more influenced by the morphological characteristics in the MIU and OEM clones. The IPA clone showed no correlation between the variables analyzed, regardless of the water regime. PCA can be used to understand the growth dynamics of plants and to identify the water conditions that act in the production of cactus clones, favoring better management in the cultivation of culture.
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Claims 6
Claim · model-written summary
Two principal components explained more than 82% of variability in forage cactus morphology and production data.
Verbatim
e0“Two main components explained >82% of the total variability of the data”
Claim · model-written summary
The relationship between forage cactus morphological and production variables depended on clone and water regime.
Not reportedDirection
Verbatim
e0“the relationship between morphological and production variables depended on the clone and the water regime”
t0“forage cactus clones”
Claim · model-written summary
Morphological characteristics had a stronger association with fresh and dry matter production in MIU clones.
Not reportedOrgan / stage
Verbatim
e0“The production of fresh and dry matter was more influenced by the morphological characteristics in the MIU and OEM clones”
Claim · model-written summary
Morphological characteristics had a stronger association with fresh and dry matter production in OEM clones.
Verbatim
e0“The production of fresh and dry matter was more influenced by the morphological characteristics in the MIU and OEM clones”
Claim · model-written summary
IPA clones showed no correlation between the analyzed morphology and productivity variables across water regimes.
Verbatim
e0“The IPA clone showed no correlation between the variables analyzed, regardless of the water regime.”
Claim · model-written summary
The authors conclude PCA can identify water conditions relevant to cactus production management.
Verbatim
e0“PCA can be used to understand the growth dynamics of plants and to identify the water conditions that act in the production of cactus clones, favoring better management in the cultivation of culture.”