Elevation determines the productivity of large cardamom (Amomum subulatum Roxb.) cultivars in Sikkim Himalaya

被引：1

作者：

Lepcha, Patrush ^{[1
,2
]}

Gaira, Kailash S. ^{[1
]}

Pandey, Aseesh ^{[3
]}

Chettri, Santosh Kumar ^{[1
]}

Lepcha, Jarina ^{[1
]}

Lepcha, Jhony ^{[1
]}

Joshi, Rajesh ^{[1
]}

Chettri, Nakul ^{[4
]}

机构：

[1] GB Pant Natl Inst Himalayan Environm, Sikkim Reg Ctr, Post Box 24, Gangtok 737101, Sikkim, India

[2] Sikkim Univ, Dept Bot, Gangtok 737102, Sikkim, India

[3] GB Pant Natl Inst Himalayan Environm, Almora 263643, Uttarakhand, India

[4] Int Ctr Integrated Mt Dev, Post Box 3226, Kathmandu, Nepal

来源：

SCIENTIFIC REPORTS | 2023年 / 13卷 / 01期

关键词：

CLIMATE-CHANGE; RANGE SHIFTS; MOUNTAIN; ALTITUDE; PHOTOSYNTHESIS; ASSEMBLAGES; PLASTICITY; VEGETATION; DIVERSITY; IMPACTS;

D O I：

10.1038/s41598-023-47847-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Large cardamom (Amomum subulatum Roxb.) is an economically important cash crop that provides a livelihood option for the rural communities in Sikkim Himalaya. However, its production has declined drastically over the past few decades due to climate change and other factors affecting the livelihood of marginal cardamom-dependent farmers in the region. Climate change causes a shift in elevational distributions of mountain species, and it is pivotal to understand its effect on yield and yield-related traits for economically important plant species like large cardamom. For this, we randomly studied 41 large cardamom cultivation sites in Sikkim (India) with elevations ranging between 975 and 2069 m asl and evaluated the yield-related traits (number of capsules per spike, capsule length, capsule width, fresh capsule weight, dry capsule weight, number of seeds per locule, fresh seed weight, and dry seed weight) in five cultivars (Dzongu Golsey, Sawney, Seremna, Ramsey, and Varlangey). We observed a significant variability (P<0.05) for morphometric traits in each of the five cultivars cultivated in different elevations. The cultivation of low-elevation cultivars like Seremna and Dzongu Golsey (suitable in elevation<975 m) has shifted upward to mid (975-1515 m) and high-elevation (>1515 m), while cultivation of high-elevation Ramsey cultivar (suitable in elevation>1515 m) has shifted downward (<1515 m). The Dzongu Golsey, Sawney, and Seremna cultivated in mid-elevation (975-1515 m) performed better in terms of yield-related traits than the same cultivars cultivated in high-elevation (>1515 m) and showed moderate to high negative correlation between elevation and yield-related traits, indicating the negative effect of elevation on their yield. Likewise, Ramsey and Varlangey cultivated in high elevation (>1515 m) performed better than the one cultivated in mid-elevation (975-1515 m) and depicted moderate to high positive correlation between elevation and yield-related traits, suggesting a positive influence of elevation on their yield. Although there is an elevational shift in the cultivation of large cardamom cultivars, the elevation influences the performance of the large cardamom cultivars, and it also suggests cultivating the cultivars in their suitable elevation range for better productivity.

引用

页数：13