Influence of Salinity Stress on Growth Parameters and Yield of Sugarcane

Abstract

A pot culture experiment was conducted to study the influence of salt stress on growth and yield component of four sugarcane varieties viz., C 92038, Co 85004, Si 94050 and Co 85036. The result of the study reveals that the growth parameter viz., LAI, LAD and CGR, RGR and SGR indicated that the derivation of LAI, CGR and SGR are the reliable growth parameters for assessing the genotypes for salt tolerance, as resistant genotypes Co 85004 and C 92038 performed better because of higher CGR, and SGR in present study. The important yield parameters viz., number of stalk per-1 , stalk length, number of inter nodes, inter nodal length, cane diameter and single cane weight were found to be affected under salt stress condition, which leads in overall yield reduction of 38.56 per cent in T 2. However the extent of reduction was less in GA 3 treated plants (18.50 %). Under salinity condition, the reduction in yield was less in C 92038 and Co 85004 (29.81 and 28.00 %) and it was found to be maximum in Co 85036 and Si 94050 (47.82 and 47.36 %). Irrespective of the genotypes, supplementing GA 3 (150 ppm) as sett treatment and foliar application play role on imparting salt tolerance in terms of getting better growth and cane yield.

Effects of Water Regime, Genotype, and Formative Stages on the Agro-Physiological Response of Sugarcane (Saccharum officinarum L.) to Drought

“…A possible explanation was the differences in the PCA loading values for each of the developmental stages, as well as changes in the tolerance capability of a genotype as it grows and develops. Sugarcane genotypes at later stages, such as the stalk elongation stage, were more tolerant to drought compared to earlier developmental stages, such as the tillering stage [56].…”

“…It is already known how significant stomatal conductance is during drought conditions [55]. Reduced photosynthetic rate, as well as stomatal conductance during drought, resulted in low levels of internal CO 2 concentration due to inhibition of photosynthetic enzymes such as Rubisco [45,56]. This decrease in photosynthetic capacity could limit the growth and development of sugarcane genotypes during drought resulting in poor agronomic performance.…”

Skrining Klon Tebu Potensial Rendemen Tinggi Terhadap Salinitas

“…Selain akar bagian atas dari tanaman tebu juga dilaporkan menunjukkan respon terhadap cekaman salinitas. (Gomathi & Thandapani (2014) melaporkan penurunan panjang tajuk (42,37%), diameter batang (38,88%), jumlah ruas (26,66%) dan berat batang (44,30%) dari tanaman tebu yang tercekam salinitas. Berat kering tajuk dari tanaman tebu yang tercekam salinitas dengan EC 8 dS/m juga dilaporkan mengalami penurunan sebesar 77% (Simoes et al, 2016).…”

“…Hasil korelasi juga menunjukkan korelasi negatif, yang berarti bahwa semakin berat tajuk maka klon semakin peka. Hasil penelitian ini bertolak belakang dengan beberapa hasil penelitian lain yang menyebutkan bahwa klon dengan toleransi yang tinggi terhadap cekaman kekeringan tetap dapat mempertahankan biomassa tanaman (Widyasari et al, 2009;Gomathi & Thandapani, 2014). Pada kedua penelitian tersebut, umur tanaman tebu yang digunakan lebih tua (5-6 bulan), sedangkan pada peneli tian ini tanaman tebu masih berumur 3,5 bulan, dan pengamatan pertumbuhan akibat cekaman salinitas dilakukan pada saat tanaman berumur 4,5 bulan.…”

Fertilización nitrogenada, edad de la plantación al cosechar y la calidad de la caña de azúcar en un suelo moderadamente salino

“…Se sabe que la salinidad afecta el rendimiento de la caña de azúcar (1)(2)(3)(4)(5)(6)(7) (8) . Más recientemente, Karpe y otros (9) y Sengar y otros (10) estudiaron los factores fisiológicos que provocan el estrés en la caña de azúcar por las sales del suelo; así como qué factores de crecimiento son afectados por las sales en el suelo (11) . En el Perú se hicieron igualmente trabajos al respecto (12)(13)(14)(15) (16) .…”